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| Patents for George H. Downs | |||||
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| Number | Date | Patentee | Title | Type | |
| 982,545 | Jan. 24, 1911 | J.A. Brown, F.E. Sutherland | Disk Crank | power hammers | |
| 986,324 | Mar. 07, 1911 | F.E. Sutherland, J.A. Brown | Clutch Mechanism | power hammers | |