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| All Patents in class 74/570.3 | |||||
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| Number | Date | Patentee | Title | Type | |
| 292,446 | Jan. 22, 1884 | G.C. Sims | Lubricator | steam engine lubricators | |
| 601,060 | Mar. 22, 1898 | E.W. Merrill, Jr. | Drop-hammer | drop hammers | |
| 3,205,725 | Sep. 14, 1965 | H.R. Uhtenwoldt | Machine Tool Transmission | metalworking power transmission | |