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| Patents for Thomas Ham | |||||
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| Number | Date | Patentee | Title | Type | |
| 101,650 | Apr. 05, 1870 | H. Nelson | Improvement in machine for crozing barrels | barrel making machines | |
| 274,886 | Mar. 27, 1883 | J.S. Perkins, J.M. Cook | Lag-bed planer | wood planers | |