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| All Patents in class 74/595 | |||||
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| Number | Date | Patentee | Title | Type | |
| 100,004 | Feb. 22, 1870 | J.M. Beugler | Improvement in hanging crank-shafts | steam engines | |
| 2,123,757 | Jul. 12, 1938 | A.L. Warner | Pitman pin bearing | ||