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| Patents for Roy C. Townsend | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,004,714 | Oct. 03, 1911 | R.C. Townsend | Transmission Gearing | traction engine propulsion components | |
| 1,098,697 | Jun. 02, 1914 | R.C. Townsend | Variable Speed Mechanism | traction engine propulsion components | |