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| Patents for D. C. Butler | |||||
| Number | Date | Patentee | Title | Type | |
| 17,130 | Apr. 21, 1857 | H.L. McNish | Stave-machine | barrel making machines | |
| 30,378 | Oct. 09, 1860 | H.L. McNish | Barrel-head machine | barrel making machines | |