U.S. patents covering time keeping mechanisms (1892)
United States. Patent Office · [Washington : United States Patent Office] · leaf 145
WITNESSES: Jno. /W^v, INVENTOR c$* BY r7^ ATTORNEYS (No Model.) 5 Sheets—Sheet 3. H. H. PATTEE. TIME REGISTERING APPARATUS FOR ELECTRICITY. No. 478,237. Patented July 5, 1892. JTigr.4. 18 7^Jg.3 i ^{L … X\ r 5G—N #: ,-7*- -oC 1 /i JC
Clocks and watches
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
