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| Patents for Henry Thomas Dawson | |||||
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| Number | Date | Patentee | Title | Type | |
| 466,331 | Jan. 05, 1892 | H.T. Dawson | Gas Engine | gas and gasoline engines | |
| 513,486 | Jan. 30, 1894 | H.T. Dawson | Gas Engine | internal combustion engines | |
| 530,508 | Dec. 11, 1894 | H.T. Dawson | Gas Engine | gas and gasoline engines | |