U.S. patents covering time keeping mechanisms (1892)
United States. Patent Office · [Washington : United States Patent Office] · leaf 677
ydtvx e<i<&^ HE NoriRl-., PCTCRb CO., PHOrO-1 ITHO.. WASHINGTON. D. 1 (No Model.) 4 Sheets—Sheet 3. H. AUDEMARS & H. SANDOZ-SANDOZ. REPEATING MECHANISM FOR TIMEPIECES. No. 494,727 Patented Apr. 4, 1893, … ? ,a1 3
Clocks and watches
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten20unit-193-70.webp)
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten20unit-1067-476.webp)
