U.S. patents covering time keeping mechanisms (1892)
United States. Patent Office · [Washington : United States Patent Office] · leaf 755
(No Model. 3 Sheets—Sheet 3 J. C. HINCHMAN. AUTOMATIC TIME PRINTER AND INDICATOR. No. 496,310. PatentedApr. 25, 1893, ify.K |p<c/aQ||M> ~0! ~T ililllj Z „ … ^JfCTg
Clocks and watches
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
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