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| All Patents in class 123/3 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 11,036 | Jun. 06, 1854 | D. Russell | Method of operating sawmill-blocks | |
| 40,805 | Dec. 08, 1863 | J. Arbós | Gas Engine | ||
 | 278,255 | May 22, 1883 | L.H. Nash | Gas Engine | |
 | 331,080 | Nov. 24, 1885 | L.H. Nash | Method of Operating Gas Engines | |
| 649,713 | May 15, 1900 | D. Barckdall, W.J. Woodward | Explosive Engine | ||
| 1,382,995 | Jun. 28, 1921 | H.R. Lucke | Process and Apparatus for the Utilization of Heat in Oil Engines | ||