All available patents by category of invention.

Category: Adjustable Razors (9 patents)

US484116 — Fox Safety Razor (Schmitz — 1892)
US1051094 — The Superman Adjustable Razor (Finney — 1913)
US1365212 — Mark Cross style Adjustable (Walker, Morrison, Smith — 1921)
US1370960 — Adjustable Folding Razor (Gronbech — 1921)
US1445452 — Adjustable DE Razor (Schieren — 1923)
DE474959 — Ever-Sharp Oslo (Unknown — 1929)
US2661533 — Gillette Adjustable Injector Razor (Shnitzler — 1953)
US2848807 — Gillette Adjustable (Shnitzler, Benedict — 1958)
US3203093 — Schick Type M Adjustable (Kuhnl — 1965)

Category: Double Edge Razors (45 patents)

US775134 — King Camp Gillette's original patent (Gillette — 1904)
US775135 — King Camp Gillette's other patent (Gillette — 1904)
US816141 — Folding Head Razor (Wiesenfeld — 1906)
US816299 — Double Edge razor with two single edge blades (Clauberg — 1906)
US906488 — Tiny DE Razor (Crichton-Clarke — 1908)
GB191403504 — Slant Razor (Wild — 1914)
GB191512218 — Swivel Head Razor (Reynolds, Lloyd — 1916)
US1171290 — Slant Razor (Wild — 1916)
US1180686 — Illuminated Razor (Allport — 1916)
US1201317 — Finger Razor (Lishawa — 1916)
GB121415 — Ribbed Razor and Blade (Gill, Lucas — 1918)
US1328024 — Gillette New Improved Razor (Wharton — 1920)
US1370935 — Bigelow-Parkin (Van Gorder, Gronbech — 1921)
US1370960 — Adjustable Folding Razor (Gronbech — 1921)
US1445452 — Adjustable DE Razor (Schieren — 1923)
GB243881 — Darwin Razor (Kuehnrich — 1925)
GB298877 — Slant Razor (Sneyd Kynnersley — 1928)
DE483681 — Mulcuto Razor Guard (Müller — 1929)
DE490330 — Mulcuto Razor Guard (Müller — 1930)
GB368943 — Illuminated Razor (Braun — 1932)
US1912461 — Earliest (?) Gillette TTO patent (Muros — 1933)
US1933186 — Swivel Head Razor (Ryley — 1933)
GB402154 — Safety Razor Frame (Booth — 1933)
US2004086 — Early Gillette Twist-To-Open patent (Testi — 1935)
CH180747 — Fasan Slant — Swiss Patent (Osberghaus — 1935)
US2026229 — Krect Spiral Curve (Gratiot — 1935)
NL38565 — Fasan Slant — Dutch Patent (Osberghaus — 1936)
CH188938 — Walbusch B3 (Busch — 1937)
GB461542 — Neo-Gam / Neo-Lux / Neo-Ras / Ebor (Ebert, Ebert, Morschbach — 1937)
DE647758 — Neo-Gam / Neo-Lux / Neo-Ras / Ebor (Ebert, Ebert — 1937)
GB469720 — Walbusch B3 (Busch — 1937)
US2098862 — Neo-Gam / Neo-Lux / Neo-Ras / Ebor (Ebert, Ebert — 1937)
AT151919 — Neo-Gam / Neo-Lux / Neo-Ras / Ebor (Morschbach — 1937)
GB485747 — Apollo travel slant razor with blades in handle (Lauterjung, Herkenrath, Herkenrath — 1938)
DE665265 — Fasan Slant — German Patent (Osberghaus — 1938)
US2129022 — Fasan Slant — US patent (Osberghaus — 1938)
DE669899 — Walbusch Razor (Busch — 1938)
DE678521 — Push Button Razor (Linhorst — 1939)
US2225405 — Allbright Razorlite (Osterman — 1940)
CH218155 — Swivel Head Razor (Gisiger — 1941)
US2270388 — Gilette Tech (Stampleman — 1942)
US2319815 — Stahly Live Blade (Harshberger — 1943)
US2359028 — Shake Sharp Razor (Friel — 1944)
US2644229 — An early Toggle patent (Muros — 1953)
US2848807 — Gillette Adjustable (Shnitzler, Benedict — 1958)

Category: Dry Shave Razors (3 patents)

US489995 — Stenberg Dry Razor (Stenberg — 1893)
US646065 — Pedal-Operated Shaving Device (Bligh — 1900)
GB558703 — Wilkinson Dry Shave Razor (Knowles — 1944)

Category: Electric Razors (5 patents)

US616554 — The first Electric Razor patent (O'Rourke — 1898)
US1757978 — Schick Electric Razor (Schick — 1930)
US2054418 — Electric Razor, claimed for Stahly Live Blade (Hartmann — 1936)
DE651039 — Electric Razor (Hartmann — 1937)
DE1794636 — Electric Injector Razor (De Longuyon — 1959)

Category: Folding Razors (18 patents)

US229127 — Folding Razor (Heitner — 1880)
US338167 — Folding Razor (Ehrlich — 1886)
US354196 — Kampfe Folding Razor (Kampfe, Kampfe, Kampfe — 1886)
US360159 — Folding Razor (Keating — 1887)
US370505 — Torrey Toboggan Razor (Turner — 1887)
US375592 — Folding Razor (Aloe — 1887)
DE57239 — Sport No. 1 Foldable Razor (Scharff — 1891)
US756615 — Folding Razor (Fornander — 1904)
US816141 — Folding Head Razor (Wiesenfeld — 1906)
US837359 — Folding Razor (Tuller — 1906)
US856438 — Folding Razor (Beltrame, Falchi — 1907)
US906488 — Tiny DE Razor (Crichton-Clarke — 1908)
US1234834 — Darrent Army & Navy Safety Razor Kit (Warren — 1917)
US1370935 — Bigelow-Parkin (Van Gorder, Gronbech — 1921)
US1370960 — Adjustable Folding Razor (Gronbech — 1921)
US1376759 — Single Edge Folding Razor (Gronbech — 1921)
US1742330 — Le Figaro Folding Razor (Valet — 1930)
US1875990 — Folding Cardboard Razor (Christmas — 1932)

Category: Handleless Razors (7 patents)

US424601 — Handleless Safety Razor (Eigen — 1890)
US1201317 — Finger Razor (Lishawa — 1916)
CH77959 — Eureka Handleless Razor (Besançon — 1918)
US1326635 — Eureka Handleless Razor (Besançon — 1919)
US1370935 — Bigelow-Parkin (Van Gorder, Gronbech — 1921)
US1370960 — Adjustable Folding Razor (Gronbech — 1921)
US1376759 — Single Edge Folding Razor (Gronbech — 1921)

Category: Illuminated Razors (6 patents)

US1168288 — Illuminating Razor Attachment (Davidson — 1916)
US1180686 — Illuminated Razor (Allport — 1916)
US1223305 — Illuminating Attachment For Razors (Allport — 1917)
GB368943 — Illuminated Razor (Braun — 1932)
US1900965 — Illuminated Razor (Weiss — 1933)
US2225405 — Allbright Razorlite (Osterman — 1940)

Category: Injector Magazines (10 patents)

US1969945 — Claimed for Schick Type D/G/H (Rodrigues — 1934)
US2043046 — Injector Magazine (Kuhnl — 1936)
US2072636 — Injector Razor and Magazine (Hilliard — 1937)
US2109017 — Injector Magazine (Rodrigues — 1938)
US2200752 — Injector Magazine (Kuhnl — 1940)
US2202468 — Injector Magazine (Rodrigues — 1940)
US2215008 — Injector Magazine (Kuhnl — 1940)
US2310180 — Injector Magazine (Kuhnl — 1943)
US2357208 — Injector Magazine (Kuhnl — 1944)
CH416969 — Plastic Injector Magazine (De Longuyon — 1967)

Category: Injector Razors (40 patents)

US1452935 — Claimed for Schick Type C (Schick — 1923)
US1584811 — Claimed for Schick Type A/B (Schick — 1926)
GB264203 — Claimed for Schick Type B (Schick — 1927)
GB265525 — Claimed for Schick Type B2 (Schick — 1927)
GB276735 — Claimed for Schick Type B2 (Schick — 1927)
US1652685 — Claimed for Schick Type A/B (Schick — 1927)
US1730167 — Schick Repeater (Type B) (Schick — 1929)
US1767706 — Magazine Razor (Schick — 1930)
US1797733 — Claimed for Schick Type C (Schick — 1931)
US1806087 — Claimed for Schick Type D/E/F/G/H (Schick — 1931)
US1877429 — Magazine Razor (Rodrigues — 1932)
US1969945 — Claimed for Schick Type D/G/H (Rodrigues — 1934)
US2030703 — Injector Razor (Kuhnl — 1936)
US2050244 — Injector Razor (Camfield — 1936)
US2058633 — Claimed for Schick Type F/H (Rodrigues — 1936)
US2060243 — Schick Type C3 (Rodrigues, Kuhnl — 1936)
US2065748 — Injector Razor and Magazine (Rodrigues — 1936)
US2066800 — Injector Razor Head (Rodrigues — 1937)
US2072636 — Injector Razor and Magazine (Hilliard — 1937)
US2111739 — Schick Type C (Rodrigues — 1938)
US2138353 — Schick Type E2 (Rodrigues — 1938)
US2160370 — Injector Razor (Rodrigues — 1939)
US2167032 — Injector Razor (Rodrigues — 1939)
US2203837 — Injector Razor (Morris, Kuhnl — 1940)
US2205568 — Injector Razor (Kuhnl — 1940)
US2221379 — Injector Razor (Hilliard, Kuhnl — 1940)
US2230462 — Magazine Razor (Kuhnl — 1941)
USD125592 — Design patent for Schick Type F (Rodrigues — 1941)
US2246368 — Travel Injector Razor (Kuhnl — 1941)
US2256810 — Injector Razor (Kuhnl — 1941)
US2281980 — Concealed Spring Injector Razor (Kuhnl — 1942)
US2521481 — Similar to Schick Type F (Rodrigues — 1950)
US2661533 — Gillette Adjustable Injector Razor (Shnitzler — 1953)
DE1794636 — Electric Injector Razor (De Longuyon — 1959)
US2911714 — Injector Razor with Hydromagic Lever (Preis, Kuhnl — 1959)
US2911713 — Claimed for Schick Type I/J/K/L/N/O (Kuhnl — 1959)
CH378722 — Supramat Injector (De Longuyon — 1964)
US3203093 — Schick Type M Adjustable (Kuhnl — 1965)
US3311975 — US patent for Supramat Injector (De Longuyon — 1967)
USD414898 — Design patent for Schick Type O (Grange — 1999)

Category: Multiple Blade Razors (4 patents)

US1890334 — Twin blade razor (Muros — 1932)
US1920711 — Multiplex Razor (‘Mvltiplex’) (Pelizzola — 1933)
US2315785 — The Erazor (Greenleaf — 1943)
US3821851 — Kuhnl's take on the Erazor (Kuhnl — 1974)

Category: Others (2 patents)

US2292387 — Secret Communication System (Kiesler Markey, Antheil — 1942)
US2511979 — “Hyperloop” (Goddard — 1950)

Category: Razor Blade Carriers (1 patent)

US540319 — Razor Blade Carrier (Kampfe, Kampfe, Kampfe — 1895)

Category: Razor Blade Holders (1 patent)

US794798 — Razor Blade Holder (Heckel — 1905)

Category: Razor Blades (12 patents)

US960424 — Zinn Automatic Razor with narrow blade (Smart — 1910)
US1123371 — Razor Blade (Proctor — 1915)
GB121415 — Ribbed Razor and Blade (Gill, Lucas — 1918)
US1499698 — Razor Blade (Schoenert — 1924)
US1739280 — Gem Micromatic Razor and Blades (Behrman — 1929)
GB323007 — Razor Blade (Kylberg — 1929)
GB381391 — Razor Blade (Lübbertsmeier — 1932)
DE607187 — Dimpled Razor Blade (Lübbertsmeier — 1934)
GB445385 — Ribbed Single Edge Blade (O'Neill — 1936)
US2108267 — Razor Blade (O'Neill — 1938)
US2169383 — Enders Speed Razor and Blade (Drew — 1939)
DE739561 — Mulcuto Razor Blade (Müller — 1943)

Category: Razor Boxes (1 patent)

US638126 — Box for Safety Razors (Kampfe, Kampfe, Kampfe — 1899)

Category: Razor Guards (3 patents)

GB296597 — Razor Guard (Morgan, Mumme — 1928)
DE483501 — Patent claimed by Merkur (Morgan, Mumme — 1929)
US2048565 — Razor Guard (Rodrigues — 1936)

Category: Razor Handles (2 patents)

USD23699 — Kampfe design for razor handle (Kampfe, Kampfe, Kampfe — 1894)
DE801132 — Handle for Neo-Lux and Ebor razors (Ebert, Orlowski — 1950)

Category: Self Sharpening Razors (10 patents)

US1718219 — De Haven Self Sharpening Razor (De Haven — 1929)
US1826410 — Ronson “Shaves and Sharpens” Razor (Aronson — 1931)
US1859554 — De Haven Self Sharpening Razor (De Haven — 1932)
GB375651 — Ronson “Shaves and Sharpens” Razor (Aronson — 1932)
GB383018 — Ronson “Shaves and Sharpens” Razor (Aronson — 1932)
US1931856 — Ronson “Shaves and Sharpens” Razor (Aronson — 1933)
US1966425 — Ronson “Shaves and Sharpens” Razor (Aronson — 1934)
US2337595 — Shake Sharp Razor (Friel — 1943)
US2359028 — Shake Sharp Razor (Friel — 1944)
US2397555 — Shake Sharp Razor (Lotthamer — 1946)

Category: Shaving Brushes (1 patent)

US1786224 — Folding Shaving Brush (Blondin — 1930)

Category: Single Edge Razors (123 patents)

US206473 — Monks' Shaving Apparatus (Monks — 1878)
US228904 — First Kampfe Safety Razor Patent (Kampfe, Kampfe — 1880)
US229127 — Folding Razor (Heitner — 1880)
US338167 — Folding Razor (Ehrlich — 1886)
US341420 — Kampfe Safety Razor (Kampfe — 1886)
US344115 — Kampfe Razor with built-in mirror (Kampfe — 1886)
US344114 — Kampfe Lather Catcher (Kampfe, Kampfe — 1886)
US354196 — Kampfe Folding Razor (Kampfe, Kampfe, Kampfe — 1886)
US358978 — Kampfe Safety Razor (Kampfe, Kampfe, Kampfe — 1887)
US360159 — Folding Razor (Keating — 1887)
US361234 — Safety Razor (Partridge — 1887)
US370505 — Torrey Toboggan Razor (Turner — 1887)
US370506 — Torrey Comet Razor (Turner — 1887)
US375592 — Folding Razor (Aloe — 1887)
US385462 — Kampfe Safety Razor (Kampfe, Kampfe, Kampfe — 1888)
US387359 — Kampfe Lather Catcher (Kampfe, Kampfe, Kampfe — 1888)
US400418 — Simplified Torrey Comet Razor (Turner — 1889)
US424601 — Handleless Safety Razor (Eigen — 1890)
DE57239 — Sport No. 1 Foldable Razor (Scharff — 1891)
US484116 — Fox Safety Razor (Schmitz — 1892)
DE64903 — German Patent for the Rapide safety razor (Scharff — 1892)
US512125 — US Patent for the Rapide safety razor (Scharff — 1894)
US554823 — Kampfe Lather Catcher (Kampfe, Kampfe, Kampfe — 1896)
US560493 — Safety Razor (Gibbs — 1896)
USD27032 — Kampfe Safety Razor Casing (Kampfe, Kampfe, Kampfe — 1897)
US616806 — First Reichard Razor Patent (Reichard — 1898)
US616807 — The second Reichard patent (Reichard — 1898)
US637511 — Kampfe Safety Razor (Kampfe, Kampfe, Kampfe — 1899)
US637512 — Kampfe Safety Razor (Kampfe, Kampfe, Kampfe — 1899)
US645017 — Lather Catcher SE Razor (Scheuber — 1900)
US657010 — Lather Catcher SE Razor (Scheuber — 1900)
US664177 — Lather Catcher SE razor (Scheuber — 1900)
US668752 — Kampfe Safety Razor (Kampfe, Kampfe, Kampfe — 1901)
US672983 — Kampfe Safety Razor (Kampfe, Kampfe, Kampfe — 1901)
US672984 — Kampfe 'New Model' (Kampfe, Kampfe, Kampfe — 1901)
US679639 — Lather Catcher SE Razor (Scheuber — 1901)
US686143 — Gem Junior Bar (Scheuber — 1901)
US690380 — Torrey Safety Razor (Turner — 1901)
US694650 — Kampfe Safety Razor (Kampfe, Kampfe, Kampfe — 1902)
US698763 — New Torrey Safety Razor (Turner — 1902)
GB190211526 — Wilkinson Patent Safety Shaver (Wilkinson Latham — 1903)
US733399 — Kampfe Safety-Razor (Kampfe, Kampfe, Kampfe — 1903)
US733400 — Kampfe Safety Razor (Kampfe, Kampfe, Kampfe — 1903)
US739029 — Lather Catcher SE Razor (Scheuber — 1903)
US749751 — Lather Catcher SE Razor (Scheuber — 1904)
US756615 — Folding Razor (Fornander — 1904)
US759262 — Gaisman's first razor patent (Gaisman — 1904)
US759475 — Lather Catcher SE Razor (Scheuber — 1904)
US769114 — Lather Catcher SE Razor (Scheuber — 1904)
SE18647 — Heljestrand Razor (Lindevall — 1904)
US780233 — Lather Catcher SE Razor (Scheuber — 1905)
US780067 — Radio Magno Safety “Combination” Ordinary razor (Scheuber — 1905)
US788820 — Christy Razor (Christy — 1905)
US798129 — Christy Hoe Razor (Christy — 1905)
US807172 — One Piece Razor (almost) (Jackson — 1905)
US811999 — Pocket Safety Razor (Benet — 1906)
GB190524010 — Zinn Automatic Razor - The British Saga (Smart — 1906)
US827718 — Razor with Circular Blade (Eigen — 1906)
US837359 — Folding Razor (Tuller — 1906)
US843148 — One Piece Razor (Jackson — 1907)
US850183 — Lather Catcher SE Razor (Reichard — 1907)
US853960 — Christy Razor (Christy — 1907)
US856438 — Folding Razor (Beltrame, Falchi — 1907)
US866856 — Lather Catcher (Gibford — 1907)
US866827 — Swivel Head Razor (Tittmann — 1907)
US881033 — Zinn Automatic Razor (Smart — 1908)
US960424 — Zinn Automatic Razor with narrow blade (Smart — 1910)
GB190914526 — The '1924' razor design as patented in 1909/1910 (Bueno de Mesquita — 1910)
US962531 — Lather Catcher SE Razor (Schmidt — 1910)
US996837 — Mark Cross Razor (Cress — 1911)
US1005273 — Clark's Silver King (Molkenthin — 1911)
US1008719 — Kampfe Star Convex (Kampfe — 1911)
US1013034 — Croscut Single Edge Slant Razor (Marx — 1911)
US1018783 — The '1912' SE razor (Scheuber — 1912)
US1044863 — Mark Cross Razor (Cress, Novitsky, Greenbrier — 1912)
US1047617 — Blade for Mark Cross Razor (Cress — 1912)
US1051094 — The Superman Adjustable Razor (Finney — 1913)
US1091436 — SE Razor '1914' (Kaufman — 1914)
US1093189 — Kampfe Safety Razor (Kampfe — 1914)
US1135775 — The US patent for the '1924' razor design (Bueno de Mesquita — 1915)
US1234834 — Darrent Army & Navy Safety Razor Kit (Warren — 1917)
CH77959 — Eureka Handleless Razor (Besançon — 1918)
US1299570 — Multi blade Safety Razor Frame (Groschopp — 1919)
US1326635 — Eureka Handleless Razor (Besançon — 1919)
US1365212 — Mark Cross style Adjustable (Walker, Morrison, Smith — 1921)
US1376759 — Single Edge Folding Razor (Gronbech — 1921)
DE380557 — Mulcuto (Dahl, Ohliger, Flügel — 1923)
US1488907 — The '1924' Patent (Bueno de Mesquita — 1924)
US1502615 — Christy Razor with Massage Bar (Christy — 1924)
US1540731 — Improvements for the '1924' Razor (Bueno de Mesquita — 1925)
US1563724 — Christy Razor (Christy — 1925)
US1592540 — Kriss Kross razor (Rhodes — 1926)
DE444361 — Mulcuto Razor (Müller — 1927)
DE450267 — German patent for the '1924' razor (Bueno de Mesquita — 1927)
DE460318 — Mulcuto Razor (Müller — 1928)
DE473593 — Mulcuto Razor (Müller — 1929)
DE474959 — Ever-Sharp Oslo (Unknown — 1929)
US1718219 — De Haven Self Sharpening Razor (De Haven — 1929)
GB321115 — Wilkinson Empire Razor (Beckham Randolph — 1929)
US1739280 — Gem Micromatic Razor and Blades (Behrman — 1929)
US1742330 — Le Figaro Folding Razor (Valet — 1930)
US1760496 — Single Edge Stahly (Harshberger — 1930)
US1773614 — Gem Micromatic TTO (Dalkowitz — 1930)
US1777602 — Christy Razor (Christy — 1930)
US1791552 — Enders Speed Razor - Head and blade (Bigoney — 1931)
US1791553 — Enders Speed Razor - The handle (Bigoney — 1931)
US1826410 — Ronson “Shaves and Sharpens” Razor (Aronson — 1931)
US1859554 — De Haven Self Sharpening Razor (De Haven — 1932)
GB375651 — Ronson “Shaves and Sharpens” Razor (Aronson — 1932)
US1875990 — Folding Cardboard Razor (Christmas — 1932)
GB383018 — Ronson “Shaves and Sharpens” Razor (Aronson — 1932)
US1890334 — Twin blade razor (Muros — 1932)
US1900965 — Illuminated Razor (Weiss — 1933)
US1931856 — Ronson “Shaves and Sharpens” Razor (Aronson — 1933)
US1966425 — Ronson “Shaves and Sharpens” Razor (Aronson — 1934)
GB419495 — Darwin Hollow Ground Safety Razor (Brown — 1934)
US2169383 — Enders Speed Razor and Blade (Drew — 1939)
US2315785 — The Erazor (Greenleaf — 1943)
US2337595 — Shake Sharp Razor (Friel — 1943)
US2359028 — Shake Sharp Razor (Friel — 1944)
US2397555 — Shake Sharp Razor (Lotthamer — 1946)
US2580058 — Enders Speed Shaver (Willhelm — 1951)
US3821851 — Kuhnl's take on the Erazor (Kuhnl — 1974)

Category: Slant Razors (17 patents)

US1013034 — Croscut Single Edge Slant Razor (Marx — 1911)
GB191403504 — Slant Razor (Wild — 1914)
US1171290 — Slant Razor (Wild — 1916)
GB298877 — Slant Razor (Sneyd Kynnersley — 1928)
CH180747 — Fasan Slant — Swiss Patent (Osberghaus — 1935)
US2026229 — Krect Spiral Curve (Gratiot — 1935)
NL38565 — Fasan Slant — Dutch Patent (Osberghaus — 1936)
CH188938 — Walbusch B3 (Busch — 1937)
GB461542 — Neo-Gam / Neo-Lux / Neo-Ras / Ebor (Ebert, Ebert, Morschbach — 1937)
DE647758 — Neo-Gam / Neo-Lux / Neo-Ras / Ebor (Ebert, Ebert — 1937)
GB469720 — Walbusch B3 (Busch — 1937)
US2098862 — Neo-Gam / Neo-Lux / Neo-Ras / Ebor (Ebert, Ebert — 1937)
AT151919 — Neo-Gam / Neo-Lux / Neo-Ras / Ebor (Morschbach — 1937)
GB485747 — Apollo travel slant razor with blades in handle (Lauterjung, Herkenrath, Herkenrath — 1938)
DE665265 — Fasan Slant — German Patent (Osberghaus — 1938)
US2129022 — Fasan Slant — US patent (Osberghaus — 1938)
DE669899 — Walbusch Razor (Busch — 1938)

Category: Stropping and Honing Devices (12 patents)

USD24093 — Razor Blade Holder (Kampfe, Kampfe, Kampfe — 1895)
US613825 — Stropping Machine (Scheuber — 1898)
US627014 — Stropping Machine (Scheuber — 1899)
US658649 — Stropping Machine (Kampfe, Kampfe, Kampfe — 1900)
US658650 — Stropping Machine (Kampfe, Kampfe, Kampfe — 1900)
US724337 — Stropping Machine (Scheuber — 1903)
US892011 — Stropping Machine (Scheuber — 1908)
US1339397 — Warner-Jones Razor Blade Holder (Jones — 1920)
US1427130 — Strand Sharpener (Strand — 1922)
DE403299 — Mulcuto Blade Sharpener (Müller — 1924)
DE467996 — Mulcuto Blade Sharpener (Müller — 1928)
DE503559 — Mulcuto DE Blade Sharpener (Müller — 1930)

Category: Swivel Head Razors (6 patents)

US672983 — Kampfe Safety Razor (Kampfe, Kampfe, Kampfe — 1901)
US866827 — Swivel Head Razor (Tittmann — 1907)
GB191512218 — Swivel Head Razor (Reynolds, Lloyd — 1916)
US1933186 — Swivel Head Razor (Ryley — 1933)
GB402154 — Safety Razor Frame (Booth — 1933)
CH218155 — Swivel Head Razor (Gisiger — 1941)

Category: Trademarks (2 patents)

USTM41201 — Yankee Trademark (Reichard — 1903)
USTM130008 — Ever-Ready Trademark Face (Bueno de Mesquita — 1920)

Category: Twist-To-Open Razors (4 patents)

US1773614 — Gem Micromatic TTO (Dalkowitz — 1930)
US1912461 — Earliest (?) Gillette TTO patent (Muros — 1933)
US2004086 — Early Gillette Twist-To-Open patent (Testi — 1935)
US2848807 — Gillette Adjustable (Shnitzler, Benedict — 1958)

Category: Unusual Blade Razors (9 patents)

US703845 — Wind-up Rotary Razor (Standish — 1902)
US827718 — Razor with Circular Blade (Eigen — 1906)
US845628 — Razor with Triangular Blade (Gaylor — 1907)
US847308 — Razor with Hexagonal Blade (Baker, Frisbie — 1907)
US855252 — Razor with Square Blade (Krusius — 1907)
GB297552 — A. Mann's 14 in 1 Razor (Turner — 1928)
GB329127 — Maktor Three Edge Safety Razor (Goddard — 1930)
GB360988 — Lady Marguerite Razor (Fraser — 1931)
US1958718 — Schermack Lady's Razor (Schermack — 1934)

Category: Wind-up Razors (2 patents)

US703845 — Wind-up Rotary Razor (Standish — 1902)
US2319815 — Stahly Live Blade (Harshberger — 1943)