U.S. patents covering time keeping mechanisms (1892)
United States. Patent Office · [Washington : United States Patent Office] · leaf 409
^Atte^sit. _j7Zl/e7lt07* … ^^v2*>o«_--*V7 / ; NORRS PETERS CO. PHOTO-LIT HO.. V United States Patent Office. EDWIN SANFORD PHELPS, OF LEAVENWORTH, KANSAS. TIME-LOCK. SPECIFICATION forming part of Letters Patent No. 486,603, dated November 22,1892. Application filed June 2,1892, Serial No. 435,254. (No model,) To all whom…
Clocks and watches
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
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