U.S. patents covering time keeping mechanisms (1892)
United States. Patent Office · [Washington : United States Patent Office] · leaf 659
JFig.g … WITNESSES YX/uvcc % INVENTOR Attorney. / i PETERS CO , PHOTO-LIThC. States Patent Offic; WILLIAM KAISLING, OF ALLEGHENY, PENNSYLVANIA.ELECTRIC CLOCK STRIKING MECHANISM. SPECIFICATION forming- part of Letters Patent No. 493,777, dated March 21,1893. Application filed April 4,1892. Serial No.…
Clocks and watches
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