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| Patents for Richard Hoppin | |||||
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| Number | Date | Patentee | Title | Type | |
| 419,046 | Jan. 07, 1890 | G.M. Hinkley | Saw-mill dog | sawmill dogs | |
| 822,893 | Jun. 05, 1906 | J.F. Harrison | Cushioning device for freely-gyrating mechanisms | miller | |