Patents in the B26B21/523 category
Patent CH70476
Invention Rasierapparat
Filed Friday, 19th March 1915
Published Friday, 1st October 1915
Inventor Robert Türck
Language German
1920 — Druseidt/Impero/Ratio Folding Razor
Patent DE323451
Invention Griffbestigung an Rasierapparaten
Filed Saturday, 22nd February 1919
Published Wednesday, 21st July 1920
Inventor Paul Druseidt
Language German
Patent US1749051
Invention Safety-Razor Handle
Filed Monday, 18th October 1926
Published Tuesday, 4th March 1930
Inventor James Alex Denby Watt
Language English
1932 — Lucky Strike advertiser
Patent US1875990
Invention Safety Razor
Filed Tuesday, 15th September 1931
Published Tuesday, 6th September 1932
Inventor Burton Christmas
Language English
A novelty razor that is folded into what looks like book of matches.