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| All Patents in class 37/434 | |||||
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| Number | Date | Patentee | Title | Type | |
| 6,392X | Feb. 22, 1831 | S. Davis, Jr. | Machine for removing earth, stone, etc. | ||
| 6,392 | Apr. 24, 1849 | C. Hicks, C.H. Peck | Planing-machine | wood planers | |