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| All Patents in class 123/41.84 | |||||
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| Number | Date | Patentee | Title | Type | |
| 550,674 | Dec. 03, 1895 | G. McGhee, P. Burt | Gas or Combustable Vapor Motor Engine | ||
| 580,387 | Apr. 13, 1897 | J.F. Steward, G.H. Ellis | Explosive Engine | oil engines | |
| 646,282 | Mar. 27, 1900 | E.T. Headech | Hydrocarbon Motor | oil engines | |
| 1,213,340 | Jan. 23, 1917 | F.M. Davis | Gas-engine | cylinders | |
| 2,703,077 | Mar. 01, 1955 | A.K. Antonsen | Engine Cylinder Structure | internal combustion engines | |