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| Patents for Fred Clarke | |||||
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| Number | Date | Patentee | Title | Type | |
| 397,694 | Feb. 12, 1889 | H.H. Bassett, F. Clarke | Lathe attachment for rounding handle-ends | wood lathes | |
| CA-50,048 | Sep. 21, 1895 | J. Abell | Machine a Detente Variable | steam engine valves | |