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Annual report of the Commissioner of Patents for the year .. (1869)

United States. Patent Office · Washington : G.P.O · leaf 486

An illustration from Annual report of the Commissioner of Patents for the year .., 1869, leaf 486
476 REPORT OF THE

United States. Patent Office · Patents

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

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