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U.S. patents covering time keeping mechanisms (1892)
United States. Patent Office · [Washington : United States Patent Office] · leaf 17
_ZTUUe7lJt07 • *j2jUUj. (No Model.) q £ LUNDSTEDT 6 Sheets_Sheet 3 POSTAL DATE AND TIME STAMPING MACHINE. No. 472,951. Patented Apr. 12, 1892. r, JFLg.4. … £-. ~us. w r^^ Jrtcf.5.Clocks and watches
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
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