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| Patents Granted on 1841-04-__ | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,038 | Apr. 10, 1841 | C. Manning | Machine for cutting staves | barrel making machines | |
| 2,051 | Apr. 16, 1841 | D.A. Church | Manner of arranging and operating dogs of sawmills | sawmill dogs | |
| 2,054 | Apr. 16, 1841 | L. Coes | Loring Coes Screw Wrench | nut wrenches | |
| 2,067 | Apr. 24, 1841 | Z. Rice | Machine for Cleaning and Winnowing Grain | ||