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| All Patents in class 74/587 | |||||
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| Number | Date | Patentee | Title | Type | |
| 525,358 | Sep. 04, 1894 | F.C. Olin | Gas Engine | gas and gasoline engines | |
| 557,496 | Mar. 31, 1896 | J.F. Duryea | Engine or Motor | ||
| 634,529 | Oct. 10, 1899 | A. Lee | Gas Engine | gas and gasoline engines | |
| 924,787 | Jun. 15, 1909 | R. Janney | Variable Speed Transmission Device | industrial machine speed and direction changing mechanisms | |
| 2,418,901 | Apr. 15, 1947 | E.C. Read | Crosshead and guide structure | steam engines | |