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| Patents for Walter B. Allen | |||||
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| Number | Date | Patentee | Title | Type | |
| 252,597 | Jan. 24, 1882 | F.L. Coes, J.H. Coes | Screw Wrench | wrench handle components | |
| D12,839 | Mar. 28, 1882 | V.F. Prentice | Design for an upright drilling machine | drill presses | |
| 265,704 | Oct. 10, 1882 | T.C. Rice | Carriage Wrench | axle nut wrenches | |