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| All Patents in class 123/403 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 401,453 | Apr. 16, 1889 | L.H. Nash | Gas Engine | |
 | 488,483 | Dec. 20, 1892 | J.W. Raymond | Gas Engine | |
| 515,530 | Feb. 27, 1894 | E. Narjot | Gas Engine | ||
| 578,377 | Mar. 09, 1897 | J. Walrath | Explosive Engine | ||
| 613,284 | Nov. 01, 1898 | J.S. Klein | Supply Controlling Mechanism for Gas Engines | ||
| 632,859 | Sep. 12, 1899 | J. Walrath | Explosive Engine | ||
| 652,544 | Jun. 26, 1900 | C.A. Miller | Gas Engine | ||
| 659,911 | Oct. 16, 1900 | D.E. Barnard | Gas Engine | ||