Patents in the B26B21/22 category
Patent US765885
Invention Safety-Razor
Filed Friday, 15th April 1904
Published Tuesday, 26th July 1904
Inventor Daniel W. Gage
Language English
Patent US816141
Invention Safety-Razor
Filed Friday, 18th August 1905
Published Tuesday, 27th March 1906
Inventor Robert S. Wiesenfeld
Language English
1906 — Double Edge razor with two single edge blades
Patent US816299
Invention Safety-Razor
Filed Friday, 26th May 1905
Published Tuesday, 27th March 1906
Inventor Frederick A. Clauberg
Language English
1907 — Odell Draw Cut Safety Razor
Patent US840244
Invention Safety-Razor
Filed Monday, 5th February 1906
Published Tuesday, 1st January 1907
Inventors Daniel Wm and Edward H. Odell
Language English
1907 — Adjustable Duplex Razor
Patent US842928
Invention Safety-Razor
Filed Saturday, 24th February 1906
Published Tuesday, 5th February 1907
Inventor Alonzo Abner Warner
Owner Landers, Frary & Clark
Language English
1907 — DE Razor with two SE Blades
Patent US845782
Invention Safety-Razor
Filed Wednesday, 18th January 1905
Published Tuesday, 5th March 1907
Inventor William C. Heimerdinger
Language English
1907 — DE Razor with two SE Blades
Patent US845783
Invention Safety-Razor
Filed Wednesday, 18th January 1905
Published Tuesday, 5th March 1907
Inventor William C. Heimerdinger
Language English
1907 — DE Razor with two SE Blades
Patent US845784
Invention Safety-Razor
Filed Monday, 8th October 1906
Published Tuesday, 5th March 1907
Inventor William C. Heimerdinger
Language English
1907 — Duplex Razor with two SE Blades
Patent US846842
Invention Safety-Razor
Filed Friday, 18th November 1904
Published Tuesday, 12th March 1907
Inventor Daniel W. Gage
Language English
1907 — Razor with two narrow DE Blades
Patent US850430
Invention Shaving Apparatus
Filed Friday, 14th September 1906
Published Tuesday, 16th April 1907
Inventor Franz Josef Halbekann
Owner Dieckmann & Wille vorm. Fred. Wester
Language English
Patent US862480
Invention Safety-Razor
Filed Friday, 19th April 1907
Published Tuesday, 6th August 1907
Inventor William S. Hopkins
Language English
1907 — DE Razor with Two SE Blades
Patent US866924
Invention Safety-Razor
Filed Monday, 29th April 1907
Published Tuesday, 24th September 1907
Inventor Eugen Feist
Language English
1907 — Newark / Diamond Edge Roller Guard Razor
Patent US869748
Invention Safety-Razor
Filed Saturday, 9th March 1907
Published Tuesday, 29th October 1907
Inventor Joseph J. Steinharter
Owner Newark Safety Razor Company
Language English
1907 — Newark / Diamond Edge Roller Guard Razor
Patent US875008
Invention Safety-Razor
Filed Saturday, 16th March 1907
Published Tuesday, 31st December 1907
Inventor Joseph J. Steinharter
Owner Newark Safety Razor Company
Language English
Patent US1383783
Invention Rubber Razor
Filed Thursday, 24th July 1919
Published Tuesday, 5th July 1921
Inventor Rennie E. Billingsley
Language English
1933 — Multiplex Razor (‘Mvltiplex’)
Patent US1920711
Invention Safety Razor
Filed Friday, 1st November 1929
Published Tuesday, 1st August 1933
Inventor Mino Pelizzola
Language English
Multi-blade razors are not a recent invention.
‘Multiplex’ or ‘Mvltiplex’? It's of course called ‘Multiplex’, but written in a font where the ‘U’ looks like a ‘V’ (inspired by ancient Rome).