U.S. patents covering time keeping mechanisms (1892)
United States. Patent Office · [Washington : United States Patent Office] · leaf 613
///test … 3^7 v«5. 5 £ —Ji if So |7? 6 \ \KZ7 TT Co/ United States Patent Office. JOHN II. DYSON, OF BELLEVILLE, WISCONSIN.ELECTRIC CLOCK. SPECIFICATION forming part of Letters Patent No. 491,339, dated February 7, 1893. Application filed Juno 6, 1892. Serial No. 435,603, (No model.) 15 20 3° 35 To all…
Clocks and watches
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