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U.S. patents covering time keeping mechanisms (1923)

United States. Patent Office · [Washington, D.C.] : U.S. Patent Office · leaf 286

An illustration from U.S. patents covering time keeping mechanisms, 1923, leaf 286
1,449,257 Mar. 20, 1923. J. H. BANKS CHAIN HOLDER Piled Apr. 1, 1922 J^.7. … & ^Jjff£7tl7l7€,5, ^S i&S&ZVXA' ATTORNEY

Clocks and watches

Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.

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