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| All Patents in class 60/508 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,743X | Feb. 22, 1817 | B. Langdon | Steam applied to propel carriages and boats | steam traction engines | |
| 8,481 | Nov. 04, 1851 | J. Ericsson | Engine for Producing Motive Power | hot air engines | |
| 44,966 | Nov. 08, 1864 | T. McDonough | Hot Air Engine | hot air engines | |
| 128,979 | Jul. 16, 1872 | A.K. Rider | Improvement in Air Engines | hot air engines | |
| RE9,359 | Aug. 31, 1880 | A.K. Rider | Hot Air Engine | hot air engines | |