Showing 1 - 20 results of 131 for search '"Patents United States"', query time: 0.10s Refine Results
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    U.S. patent classification definitions by United States. Patent and Trademark Office

    Subjects: “…Patents United States Classification.…”
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    Government Document Online Microform Serial
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    The Mirror of the patent office and journal of American improvements. by American Historical Periodicals

    Published: W. Greer & Co., 1847
    Subjects: “…Patents United States Periodicals.…”
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    Online Journal
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    American artisan and patent record. by American Historical Periodicals

    Published: Brown, Coombs & Co., 1864
    Subjects: “…Patents United States Periodicals.…”
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    Online Journal