U.S. patents covering time keeping mechanisms (1892)
United States. Patent Office · [Washington : United States Patent Office] · leaf 691
(No Model.) No. 494,832, H. WUBBELER, ELECTRIC CLOCK. 4 Sheets—Sheet 4. Patented Apr. 4, 1893, … • {( ^U^/ ca United States Patent Office. HERMAN WUBBELER, OF BEAVER FALLS, PENNSYLVANIA.ELECTRIC CLOCK. SPECIFICATION forming part of Letters Patent No. 494,832, dated April 4,1893. Application filed May 21, 1892. Serial No. 433,905. (No model.) To all whom it may concern: Be it known that I,…
Clocks and watches
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
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