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| All Patents in class 123/192.1 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 288,479 | Nov. 13, 1883 | N.A. Otto | Gas Engine | ||
| 301,320 | Jul. 01, 1884 | G.M. Allen | Gas Engine | ||
 | 543,163 | Jul. 23, 1895 | C.W. Weiss | Explosive Engine | |
 | 543,165 | Jul. 23, 1895 | C.W. Weiss | Explosive Engine | |
| 599,235 | Feb. 15, 1898 | P.L. Hider | Explosive Engine | ||
| 636,606 | Nov. 07, 1899 | A. Winton | Explosive Engine | ||
| 662,631 | Nov. 27, 1900 | H.B. Steele | Counterbalance for Explosion-Engines | ||