Patents in the B26B21/54 category

1909 — Weck Razor Blade

Patent US929059

Invention Razor-Blade

Filed Thursday, 14^th January 1909

Published Tuesday, 27^th July 1909

Inventor Edward Weck

Language English

1910 — Kampfe Razor Blade

Patent US978303

Invention Safety-Razor Blade

Filed Monday, 20^th December 1909

Published Tuesday, 13^th December 1910

Inventor Otto Kampfe

Owner Kampfe Bros.

Language English

1911 — Razor Blade

Patent US985419

Invention Safety-Razor Blade

Filed Monday, 10^th January 1910

Published Tuesday, 28^th February 1911

Inventor Otto Kampfe

Owner Kampfe Bros.

Language English