U.S. patents covering time keeping mechanisms (1892)
United States. Patent Office · [Washington : United States Patent Office] · leaf 773
t-e^^Zfou^a&Zj, : MOBRIS PCTEHS CO, (No Model.) 2 Sheets—Sheet 2. H. S. PAGE & L. SPEAR. ELECTRIC TIME STOCK FEEDER. Patented May 9, 1893. … Wi[ DE5gES. Irp/Eqto mi. no»hi \ prren i United States Patent Office. HERBERT S. PAGE, OF MEDFORD, AND LIVY SPEAR, OF BOSTON, ASSIGNORSTO EDMUND D. SPEAR, OF BOSTON, MASSACHUSETTS. ELECTRIC TIME STOCK-FEEDER. SPECIFICATION forming part of Letters Patent No. 497,203, dated May 9,1893. Application…
Clocks and watches
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