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U.S. patents covering time keeping mechanisms (1892)
United States. Patent Office · [Washington : United States Patent Office] · leaf 437
\/lLr| EB5E5. Ticr-l4: T«*si *i> ?/&vtrf?ji,r sAyvlcvv U //T&6eAs11**cJiAS … z Tr|VsnLnr. C/cSfe! ■. MORRIS PETERS CO. PHOTO-LIT (No Model.) 3 Sheets—Sheet 2. F. TERSTEGEN. TIMEPIECE REPEATING MECHANISM. No. 487,399. Patented Dec. 6, 1892. Ficn Z Ticr-3-Clocks and watches
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