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| Patents for Bridgman & Perry | |||||
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| Number | Date | Patentee | Title | Type | |
| 188,580 | Mar. 20, 1877 | J.L. Perry, A. Bridgman | Improvement in wood-polishing machines | sanding machines | |
| 209,648 | Nov. 05, 1878 | A. Bridgman | Improvement in sandpapering-machines | sanding machines | |