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| Patents for J. B. Simcock | |||||
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| Number | Date | Patentee | Title | Type | |
| 205,362 | Jun. 25, 1878 | L.D. Dana | Improvement in friction-clutches | industrial machine clutches | |
| 205,416 | Jun. 25, 1878 | L.D. Dana, F.D. Randall | Improvement in Grinding-Machines | grinders | |