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| All Patents in class 403/131 | |||||
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| Number | Date | Patentee | Title | Type | |
| 771,457 | Oct. 04, 1904 | E.W. Bullard | Universal Joint | industrial machine universal joints | |
| 957,984 | May 17, 1910 | A.L. Mowry | Piston | rotary steam engines | |