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U.S. patents covering time keeping mechanisms (1892)
United States. Patent Office · [Washington : United States Patent Office] · leaf 687
Cln vc ulor (No Model.) No. 494,832, H. WUBBELER, ELECTRIC CLOCK. 4 Sheets—Sheet 2. Patented Apr. 4, 1893, … cfS 11 Ave £11 tor-w c u iS (S^y^-t^^-^ No Model.) No. 494,832 H. WUBBELER, ELECTEIC CLOCK. 4 Sheets—Sheet 3. Patented Apr. 4, 1893,Clocks and watches
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
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