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| Patents for John R. Perrine | |||||
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| Number | Date | Patentee | Title | Type | |
| 912,609 | Feb. 16, 1909 | J.R. Perrine | Lathe-feed mechanism | engine lathes | |
| 1,029,313 | Jun. 11, 1912 | J.R. Perrine | Feed-gearing | engine lathes | |