Titles written by US Patent Office:
Number of documents found: 2
- US Patent Office, W. Imhaeuser
Title: Four USA Patents issued to E.Immhauser 1875-1878 relating to Watchmans' Time Clocks
SubTitle: No. 170443, 172630, 192334, 206572
Keywords: clock
Other Keywords: watchman timerecorder
Edition: 1878
Page or pages: 10
BHM No: 11303 - US Patent Office
Title: US Horological Patents - Various Photo Copies
Keywords: clock watch
Other Keywords: patent
Edition: misc
BHM No: 15068
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