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U.S. patents covering time keeping mechanisms (1923)
United States. Patent Office · [Washington, D.C.] : U.S. Patent Office · leaf 802
Sept. 25, 1923. 1,468,755 H. L. SMITH AUTOMOBILE TIMING MECHANISM Filed Jan. 7, 1922 2 Sheets-Sheet l … WITNESS INVENTOR^ 9r^v^ V • ATTORNFY.Clocks and watches
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
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