Patents in the B26B21/48 category
1933 — Apollo Electrically Heated Razor
Patent DE575523
Invention Heizbarer Rasierapparat
Filed Wednesday, 9th March 1932
Published Thursday, 6th April 1933
Inventor Emil Pirwitz
Language German
Other countries US2018147
Patent US1505578
Invention Razor
Filed Monday, 26th March 1923
Published Tuesday, 19th August 1924
Inventor Charles Barra
Language English
1925 — Heated Single Edge Razor
Patent US1552026
Invention Safety Razor
Filed Thursday, 12th July 1923
Published Tuesday, 1st September 1925
Inventor Charles Barra
Language English
Contains Asbestos!
1935 — Apollo Electrically Heated Razor
Patent US2018147
Invention Safety Razor
Filed Saturday, 21st January 1933
Published Tuesday, 22nd October 1935
Inventor Emil Pirwitz
Language English
Other countries DE575523
Patent US2324148
Invention Electrically Heated Safety Razor
Filed Friday, 30th January 1942
Published Tuesday, 13th July 1943
Inventor Moses M. Gravin
Language English