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| Patents for Walter F. Trotter | |||||
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| Number | Date | Patentee | Title | Type | |
| 575,661 | Jan. 19, 1897 | W.F. Trotter | Gas or Oil Engine | gas and gasoline engines | |
| 603,297 | May 03, 1898 | W.F. Trotter | Oil or Gas Engine | oil engines | |