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| Patents for J. M. Hawley | |||||
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| Number | Date | Patentee | Title | Type | |
| 226,273 | Apr. 06, 1880 | J.L. Perry, A. Bridgman | Wood-polishing machines | drum sanders | |
| 240,179 | Apr. 12, 1881 | J.L. Perry | Sanding machine | sanding machines | |