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| Patents for N. B. Watson | |||||
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| Number | Date | Patentee | Title | Type | |
| 58,077 | Sep. 18, 1866 | L.A. Dole | Improvement in Tuyeres | ||
| 80,837 | Aug. 11, 1868 | A.R. Silver | Improvement in hub-boring machines | drilling and boring | |
| 117,003 | Jul. 11, 1871 | A.R. Silver | Improvement in Meat and Vegetable-Cutters | butcher | |
| 133,342 | Nov. 26, 1872 | A.R. Silver | Improvement in Meat-Stuffers | butcher | |
| 133,570 | Dec. 03, 1872 | J. Deming | Improvement in Hollow Augers | hollow bits | |