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| All Patents in class 74/131 | |||||
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| Number | Date | Patentee | Title | Type | |
| 7,688X | Jul. 27, 1833 | E. Bates | Steam power | ||
| 264,191 | Sep. 12, 1882 | J.E. Mustard | Traction Engine | steam traction engines | |
| 1,938,785 | Dec. 12, 1933 | B. Sassen | Transmission Mechanism | metalworking power transmission | |