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Annual report of the Commissioner of Patents for the year .. (1869)
United States. Patent Office · Washington : G.P.O · leaf 330
320 REPORT OF THE 88220— 88222 — Sim & Hutchinson— -For Extracting Oil. J. H. Seymour Water Closet.United States. Patent Office · Patents
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
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