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| Patents for J. R. Hoffman | |||||
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| Number | Date | Patentee | Title | Type | |
| 92,191 | Jul. 06, 1869 | J.R. Hoffman | Improvement in saw-mills | band sawmills | |
| 379,163 | Mar. 06, 1888 | A.E. Hoffman | Feed mechanism for saw-mill carriages | sawmill feed works | |