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| Patents for William Dent Priestman | |||||
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| Number | Date | Patentee | Title | Type | |
| 430,038 | Jun. 10, 1890 | S. Priestman, W.D. Priestman | Means for Facilitating the Starting and Regulating the Working of Hydrocarbon Engines | internal combustion engine governors | |
| 552,718 | Jan. 07, 1896 | S. Priestman, W.D. Priestman | Hydrocarbon Engine | oil engines | |