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| Patents for Pierce-Crouch Engine Co. | |||||
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| Number | Date | Patentee | Title | Type | |
| 574,670 | Jan. 05, 1897 | W.L. Crouch | Gas Engine | gas and gasoline engines | |
| 575,502 | Jan. 19, 1897 | W.L. Crouch | Gas Engine | gas and gasoline engines | |