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| Patents Granted on 1841-03-29 | |||||
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| Number | Date | Patentee | Title | Type | |
| AI38 | Mar. 29, 1841 | B. Morison | Counter scale | ||
| AI39 | Mar. 29, 1841 | W.M. Hall | Beehive | ||
| AI40 | Mar. 29, 1841 | S.S. Allen | Husking and shelling corn | ||