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| Patents for Dwight W. Williamson | |||||
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| Number | Date | Patentee | Title | Type | |
| 452,330 | May 12, 1891 | J.R. Allgire, D.W. Williamson | Machine for making veneer barrels | barrel making machines | |
| 615,773 | Dec. 13, 1898 | D.W. Williamson | Veneer-machine | veneer machines | |