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| Patents for Joseph George Mason | |||||
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| Number | Date | Patentee | Title | Type | |
| 13,028 | Jun. 12, 1855 | C.M. Day | Feed-motion for sawmills, etc. | sawmill carriages | |
| 13,234 | Jul. 10, 1855 | S.W. Soule | Excavator | excavators | |
| 13,236 | Jul. 10, 1855 | A. Stoeckel | Machine for cutting legs for pianos, tables, &c. | wood lathes | |