All 4 Us Patent Office releases on Paperback Book an... Book
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![Cover for Us Patent Office · Subject-matter Index of Patents for Inventions Issued by the United States Patent Office from 1790 to 1873, Inclusive...vol 2 (Paperback Book) [Large Type edition] (2011)](https://imusic.b-cdn.net/images/item/original/522/9781425586522.jpg?us-patent-office-2011-subject-matter-index-of-patents-for-inventions-issued-by-the-united-states-patent-office-from-1790-to-1873-inclusive-vol-2-paperback-book&class=scaled&v=1508955466)
![Cover for Us Patent Office · Subject-matter Index of Patents for Inventions Issued by the United States Patent Office from 1790 to 1873, Inclusive...vol 3 (Paperback Book) [Large Type edition] (2011)](https://imusic.b-cdn.net/images/item/original/147/9781425590147.jpg?us-patent-office-2011-subject-matter-index-of-patents-for-inventions-issued-by-the-united-states-patent-office-from-1790-to-1873-inclusive-vol-3-paperback-book&class=scaled&v=1508955466)
![Cover for Us Patent Office · Subject-matter index of patents for inventions issued by the United States Patent office from 1790 to 1873, inclusive...Vol 2 (Hardcover Book) [Large type / large print edition] (2011)](https://imusic.b-cdn.net/images/item/original/601/9781425588601.jpg?us-patent-office-2011-subject-matter-index-of-patents-for-inventions-issued-by-the-united-states-patent-office-from-1790-to-1873-inclusive-vol-2-hardcover-book&class=scaled&v=1633963595)
![Cover for Us Patent Office · Subject-matter index of patents for inventions issued by the United States Patent office from 1790 to 1873, inclusive...Vol 3 (Hardcover Book) [Large type / large print edition] (2011)](https://imusic.b-cdn.net/images/item/original/506/9781607852506.jpg?us-patent-office-2011-subject-matter-index-of-patents-for-inventions-issued-by-the-united-states-patent-office-from-1790-to-1873-inclusive-vol-3-hardcover-book&class=scaled&v=1633963595)