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| All Patents in class 123/41.47 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 607,536 | Jul. 19, 1898 | M.F. Bates | Gas Engine | ||
 | 683,886 | Oct. 01, 1901 | E.J. Woolf | Explosive Engine | |
| 954,780 | Apr. 12, 1910 | J.A. Charter | Cooling Device for Gas Engines | ||
| 2,068,536 | Jan. 19, 1937 | D.P. Davies | Pump | ||