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| Patents for Sylvanus D. Locke | |||||
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| Number | Date | Patentee | Title | Type | |
| 204,585 | Jun. 04, 1878 | S.D. Locke | Change Speed Gear | industrial machine gearing | |
| 213,338 | Mar. 18, 1879 | S.D. Locke | Variable Speed Gearing | industrial machine speed and direction changing mechanisms | |