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| All Patents in class 123/590 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 504,260 | Aug. 29, 1893 | W.H. Worth | Gas Engine | ||
| 532,314 | Jan. 08, 1895 | J.A. Charter | Gas Engine | ||
| 553,488 | Jan. 21, 1896 | W.W. Grant | Gas Engine | ||
| 591,341 | Oct. 05, 1897 | F. Konley | Engine Governor | ||
| 603,297 | May 03, 1898 | W.F. Trotter | Oil or Gas Engine | ||
 | 846,471 | Mar. 12, 1907 | F.G. Hobart | Feed Governor for Oil Engines | |
| 1,512,952 | Oct. 28, 1924 | J.A. Secor | Reatomizer | ||