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| Patents for William H. C. Smith | |||||
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| Number | Date | Patentee | Title | Type | |
| 113,800 | Apr. 18, 1871 | N. Russell | Planing Tool | metal planer tools | |
| 119,654 | Oct. 03, 1871 | D. Sager | Corn Husker | corn huskers | |
| 236,474 | Jan. 11, 1881 | T.R. Almond | Coupling for shafting | industrial machine shaft couplings | |
| 238,521 | Mar. 08, 1881 | E. Osgood | Saw | saw teeth | |
| 239,698 | Apr. 05, 1881 | L. Barthelmes | Reaming-saw | sawblades | |
| 248,612 | Oct. 25, 1881 | H. Ruddick | Recording Dynamometer | dynamometers | |