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| All Patents in class 474/130 | |||||
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| Number | Date | Patentee | Title | Type | |
| 173,871 | Feb. 22, 1876 | E.T. Thomas | Device for Running on Belts to Machinery | industrial machine pulleys and belt drive mechanisms | |
| 248,587 | Oct. 25, 1881 | W. Gray | Device for Throwing Belts Onto or Off From Revolving Pulleys | belt shifters | |