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| -safety Razors Probak,Introductiory Gillette type U.S.A. 1930 Double edge Probak Corporation Division of Autostrop Safety Razor Co., Inc., New York TM first used 26 Apr 1929. American patent No. 1633739 28 Jun 1927 filed 21 Nov 1922. Also No. 1639335 16 Aug 1927 filed 24 Jun 1929. Both patents issued to H. J. Gaisman, New York | ||||
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