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| All Patents in class 123/64 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 232,987 | Oct. 05, 1880 | C. Linford | Gas Engine | |
 | 391,338 | Oct. 16, 1888 | A. Rollason | Gas or Caloric Engine | |
| 412,883 | Oct. 15, 1889 | S. Griffin | Method of Operating Gas Engines | ||
| 480,535 | Aug. 09, 1892 | G.W. Weatherhogg | Petroleum or Similar Engine | ||
| 615,052 | Nov. 29, 1898 | H.C. Sträng | Gas Engine | ||
| 654,356 | Jul. 24, 1900 | J. Rambaud | Gas or Petroleum Motor | ||