U.S. patents covering time keeping mechanisms (1892)
United States. Patent Office · [Washington : United States Patent Office] · leaf 75
J*ig.&. … United States Patent Office. MORRIS MARTIN, OF MALDEN, MASSACHUSETTS, ASSIGNOR TO THE AUTO-MATIC TIME STAMP AND REGISTER COMPANY, OF PORTLAND, MAINE. WORKMANS TIME-RECORDER. SPECIFICATION forming part of Letters Patent No. 475,458, dated May 24,1892. Application filed January 15,1889. Renewed July…
Clocks and watches
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