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| All Patents in class 301/70 | |||||
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| Number | Date | Patentee | Title | Type | |
| 295,336 | Mar. 18, 1884 | H.H. Blake | Manufacture of Pulleys, &c. | industrial machine pulleys and belt drive mechanisms | |
| 1,296,904 | Mar. 11, 1919 | A.D. Baker | Metal Wheel for Steam and Gas Tractors | traction engine wheels | |