Patents in the B26B21/18 category
1909 — Razor with two DE blades (four shaving edges)
Patent DE206980
Invention Rasierhobel mit zwei auf einer dachartig gestalteten Unterlage angeordneten, beiderseits zugeschärften Messern.
Filed Thursday, 27th February 1908
Published Monday, 15th February 1909
Inventor Karl Middeldorf
Language German
1929 — Patent claimed by Merkur
Patent DE483501
Invention Rasierhobel mit einem vor jeder Klingenschneide angeordneten Schabrand
Filed Sunday, 12th February 1928
Published Thursday, 19th September 1929
Inventors John Henry Morgan, Alfred Stewart Mumme
Language German
Other countries GB296597
This patent was claimed for older Merkur razors.
Patent DE660801
Invention Sicherheitsrasierhobel
Filed Tuesday, 20th October 1936
Published Thursday, 12th May 1938
Inventor Richard Neul
Language German
Patent DE669899
Invention Rasierhobel
Filed Wednesday, 7th July 1937
Published Thursday, 15th December 1938
Inventor Walter Busch
Language German
1939 — Globusmann Push Button Razor
Patent DE678521
Invention Rasierhobel
Filed Thursday, 25th November 1937
Published Thursday, 22nd June 1939
Inventor Ernst Linhorst
Owner Ernst Linhorst Rasiermesser
Language German
Patent GB121415
Invention Improvements in Safety Razors
Filed Thursday, 28th March 1918
Published Thursday, 19th December 1918
Inventors Henry Thomas Gill, Harry Lucas
Language English
Patent GB165995
Invention Improvements in Safety Razors
Filed Wednesday, 28th April 1920
Published Thursday, 14th July 1921
Inventor Lionel Robinson
Language English
Patent GB243881
Invention Improvements in or relating to Safety Razors
Filed Monday, 3rd November 1924
Published Thursday, 10th December 1925
Inventor Paul Richard Kuehnrich
Language English
Patent GB296597
Invention Improvements in or relating to Safety Razors
Filed Tuesday, 15th November 1927
Published Thursday, 6th September 1928
Inventors John Henry Morgan, Alfred Stewart Mumme
Language English
Other countries DE483501
The original British patent of the German patent claimed by Merkur
1929 — Watts New Service Razor
Patent GB306703
Invention Improvements in or relating to Safety Razors
Filed Tuesday, 21st February 1928
Published Thursday, 28th February 1929
Inventor John Robert Watts
Language English
Other countries US1834813
1933 — Safety Razor for Ladies
Patent GB398758
Invention Safety Razor for Ladies
Filed Monday, 3rd April 1933
Published Thursday, 21st September 1933
Inventor Josefine Kiesling
Language English
1937 — Neo-Gam / Neo-Lux / Neo-Ras / Ebor
Patent GB461542
Invention Safety Razor With Resilient Detachable Support
Filed Thursday, 6th August 1936
Published Thursday, 18th February 1937
Inventors Erich and Fritz Ebert, Josef Morschbach
Language English
Other countries AT151919, DE647758, US2098862
The British patent for the German Neo-Gam, Neo-Lux, Neo-Ras and Ebor razors
1942 — DE Razor With Different Sides
Patent GB543782
Invention Improvements in or Relating to Safety Razors
Filed Wednesday, 11th September 1940
Published Thursday, 12th March 1942
Inventor Joe Edgar Bevis
Language English
1904 — King Camp Gillette's original patent
Patent US775134
Invention Razor
Filed Tuesday, 3rd December 1901
Published Tuesday, 15th November 1904
Inventor King Camp Gillette
Owner Federal Trust Company
Language English
The patent that started an empire. The first razor for DE blades. Ever.
1904 — King Camp Gillette's other patent
Patent US775135
Invention Razor
Filed Tuesday, 24th May 1904
Published Tuesday, 15th November 1904
Inventor King Camp Gillette
Owner Federal Trust Company
Language English
Originally filed as part of King Camp's first patent. The original patent was later divided and this patent filed separately.
Patent US783660
Invention Safety-Razor
Filed Wednesday, 4th May 1904
Published Tuesday, 28th February 1905
Inventor Anthony Williams
Owners Jesse B. Levy, Anthony Williams
Language English
Parts of the patent text are damaged and not legible.
Patent US788318
Invention Safety-Razor
Filed Monday, 24th October 1904
Published Tuesday, 25th April 1905
Inventor Benjamin Kiam
Language English
1906 — Slant Razor with Triangular Blade
Patent US819987
Invention Safety-Razor
Filed Thursday, 21st September 1905
Published Tuesday, 8th May 1906
Inventor Leonard Budd Gaylor
Language English
1907 — Razor with non-flat Blade
Patent US840371
Invention Razor
Filed Friday, 23rd February 1906
Published Tuesday, 1st January 1907
Inventor Joseph A. Reams
Owners William H. Parrish, Joseph A. Reams
Language English
1907 — Safety Razor with Curved Blade
Patent US842000
Invention Safety-Razor
Filed Saturday, 5th May 1906
Published Tuesday, 22nd January 1907
Inventor James T. McCann
Language English
1907 — Multiplex Razor with Hexagonal Blade
Patent US847308
Invention Multiple-Edge Safety-Razor
Filed Friday, 17th August 1906
Published Tuesday, 19th March 1907
Inventors Malcolm H. Baker, Franklin S. Frisbie
Owner Multiplex Safety Razor Company
Language English
Patent US851341
Invention Safety-Razor
Filed Monday, 18th September 1905
Published Tuesday, 23rd April 1907
Inventor Herbert Augustus Bullard
Language English
1907 — Razor with Square Blade
Patent US855252
Invention Safety-Razor
Filed Wednesday, 1st November 1905
Published Tuesday, 28th May 1907
Inventor Edward Krusius
Language English
Patent US856343
Invention Safety-Razor
Filed Friday, 16th December 1904
Published Tuesday, 11th June 1907
Inventor David E. Goe
Owners David E. Goe, Steel Products Company
Language English
Patent US856793
Invention Safety-Razor
Filed Friday, 15th March 1907
Published Tuesday, 11th June 1907
Inventor William J. Moore
Language English
Patent US858649
Invention Safety-Razor
Filed Tuesday, 16th October 1906
Published Tuesday, 2nd July 1907
Inventor David E. Goe
Language English
Patent US866756
Invention Razor
Filed Thursday, 18th July 1907
Published Tuesday, 24th September 1907
Inventor Adolph Werner
Language English
1907 — Razor with Square Blade
Patent US868697
Invention Razor
Filed Friday, 27th July 1906
Published Tuesday, 22nd October 1907
Inventors Richard H. Reed, Henry Wilcox
Owner Patent Ownership Company
Language English
1907 — Gillette Blade Protector
Patent US875274
Invention Protector for Safety-Razor Blades
Filed Wednesday, 8th May 1907
Published Tuesday, 31st December 1907
Inventor Frederick Bunnel King
Owner Gillette Safety Razor Company
Language English
Patent US882963
Invention Safety-Razor
Filed Tuesday, 8th October 1907
Published Tuesday, 24th March 1908
Inventor Edgar M. Quint
Language English
Patent US884375
Invention Safety-Razor
Filed Friday, 12th July 1907
Published Tuesday, 14th April 1908
Inventor John A. Everett
Language English
1908 — Razor with Square Blade
Patent US888019
Invention Razor
Filed Tuesday, 3rd October 1905
Published Tuesday, 19th May 1908
Inventor Adolph Kastor
Language English
1908 — Razor with Triangular Blade
Patent US892629
Invention Safety-Razor
Filed Monday, 9th April 1906
Published Tuesday, 7th July 1908
Inventor George P. Taylor
Language English
Patent US894854
Invention Safety-Razor
Filed Wednesday, 10th April 1907
Published Tuesday, 4th August 1908
Inventor Richard H. Reed
Owner Patent Ownership Company
Language English
Patent US896153
Invention Safety-Razor
Filed Monday, 27th May 1907
Published Tuesday, 18th August 1908
Inventor Richard H. Reed
Owner Patent Ownership Company
Language English
1908 — Double Edge Safety Razor Guard
Patent US903347
Invention Safety-Guard for Razors
Filed Thursday, 20th February 1908
Published Tuesday, 10th November 1908
Inventor Hugh Watson
Owners Jesse Clemens, Hugh Watson
Language English
Patent US906488
Invention Safety-Razor
Filed Monday, 29th April 1907
Published Tuesday, 8th December 1908
Inventor William H. Crichton-Clarke
Owner Gillette Safety Razor Company
Language English
A very interesting patent assigned to Gillette. This razor would have been even smaller than the Bigelow-Parkin.
Patent US906706
Invention Safety-Razor
Filed Thursday, 27th June 1907
Published Tuesday, 15th December 1908
Inventor Franz Josef Halbekann
Language English
1909 — Diamond-Shaped Blade Razor
Patent US908568
Invention Safety-Razor
Filed Friday, 21st February 1908
Published Tuesday, 5th January 1909
Inventors Clifton T. and Malcolm T. Heil
Language English
Patent US917532
Invention Safety-Razor
Filed Wednesday, 17th July 1907
Published Tuesday, 6th April 1909
Inventor Harrison H. Boyce
Owner Gillette Safety Razor Company
Language English
1909 — Razor with Four-Edged Blade
Patent US918126
Invention Safety-Razor
Filed Wednesday, 23rd September 1908
Published Tuesday, 13th April 1909
Inventor Osroe A. Clark
Language English
Patent US944989
Invention Safety-Razor
Filed Monday, 1st March 1909
Published Tuesday, 28th December 1909
Inventor Frank M. Edmonds
Owner Gillette Safety Razor Company
Language English
Cited in the Gillette vs Cliff-Weil court case.
1910 — Razor with Swivel-Head for blade clamping
Patent US947209
Invention Safety-Razor
Filed Saturday, 6th March 1909
Published Tuesday, 18th January 1910
Inventor John H. Woods
Owners Herbert W. Greene, George B. McCarty
Language English
Patent US996879
Invention Safety-Razor
Filed Thursday, 2nd June 1910
Published Tuesday, 4th July 1911
Inventor Levi J. Odell
Owner Odell Manufacturing Company
Language English
1911 — Safety Razor for worn-down Blades
Patent US1008769
Invention Safety-Razor
Filed Thursday, 8th September 1910
Published Tuesday, 14th November 1911
Inventor Abraham Zilbersher
Language English
1912 — Holt / Yorkshire Steel Razors
Patent US1016267
Invention Razor
Filed Tuesday, 10th August 1909
Published Tuesday, 6th February 1912
Inventor Harold Edward Sherwin Holt
Language English
1913 — Adjustable One Piece Razor
Patent US1064457
Invention Safety-Razor
Filed Saturday, 25th May 1907
Published Tuesday, 10th June 1913
Inventor Clifford E. Dunn
Owner Gillette Safety Razor Company
Language English
Cited in the Gillette vs Cliff-Weil court case.
1917 — Razor with Four-Edged Blade
Patent US1221065
Invention Safety-Razor
Filed Wednesday, 29th March 1916
Published Tuesday, 3rd April 1917
Inventor Harry G. Lutz
Language English
1917 — Razor with Triangular Blade
Patent US1238751
Invention Safety-Razor
Filed Thursday, 28th August 1913
Published Tuesday, 4th September 1917
Inventor James J. Fitzgerald
Language English
1918 — Razor with Square Blade
Patent US1276712
Invention Safety-Razor
Filed Friday, 21st December 1917
Published Tuesday, 27th August 1918
Inventor Henry Van den Berg
Language English
1925 — O'Malley One-Piece Razor Patent
Patent US1543587
Invention Safety Razor
Filed Friday, 28th March 1924
Published Tuesday, 23rd June 1925
Inventor John Francis O'Malley
Language English
The patent was acquired by Gillette in 1936 and used for the Gillette vs Cliff-Weil court case.
1928 — The patent that was Gillette's downfall.
Patent US1658435
Invention Safety Razor
Filed Saturday, 6th October 1923
Published Tuesday, 7th February 1928
Inventor Henry Jacques Gaisman
Owner Auto-Strop Safety Razor Co. Inc.
Language English
This is the patent that enabled Gaisman to take over Gillette. There are two versions. The original from 1923/28 and the reissue from 1929/30.
1930 — Le Figaro Folding Razor
Patent US1742330
Invention Safety Razor
Filed Friday, 13th May 1927
Published Tuesday, 7th January 1930
Inventor Georges Valet
Language English
Patent US1830576
Invention Safety Razor
Filed Thursday, 9th April 1931
Published Tuesday, 3rd November 1931
Inventor Erik G. Tornkvist
Language English
1931 — Watts New Service Razor
Patent US1834813
Invention Safety Razor
Filed Thursday, 14th February 1929
Published Tuesday, 1st December 1931
Inventor John Robert Watts
Owner John Watts (Sheffield and London) Limited
Language English
Other countries GB306703
1934 — deb'ette Curved head cosmetic and corn razor
Patent US1974569
Invention Cutting Device
Filed Thursday, 20th April 1933
Published Tuesday, 25th September 1934
Inventor William J. Grotenhuis
Language English
Patent US2069465
Invention Safety Razor
Filed Tuesday, 6th August 1935
Published Tuesday, 2nd February 1937
Inventor William G. Wallenbeck
Language English
Patent US2270388
Invention Safety Razor
Filed Tuesday, 9th August 1938
Published Tuesday, 20th January 1942
Inventor Samuel C. Stampleman
Owner Gillette Safety Razor Company
Language English
Patent US2644229
Invention Quick-Opening Razor
Filed Saturday, 27th November 1948
Published Tuesday, 7th July 1953
Inventor Joseph Muros
Owner Gillette Company
Language English
The earliest patent I could find for the toggle mechanism.
1953 — Handleless Ladies Underarm Razor
Patent US2648129
Invention Razor
Filed Monday, 31st January 1949
Published Tuesday, 11th August 1953
Inventor Hale B. Streeter
Owner Albert Bontempi
Language English