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| Patents for James Robson | |||||
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| Number | Date | Patentee | Title | Type | |
| 220,174 | Sep. 30, 1879 | J. Robson | Gas-Engine | gas and gasoline engines | |
| GB-187,904,501 | Nov. 04, 1879 | J. Robson | Gas Engine | gas and gasoline engines | |
| 243,795 | Jul. 05, 1881 | J. Robson | Gas Engine | gas and gasoline engines | |
| 278,600 | May 29, 1883 | J. Robson | Gas Engine | gas and gasoline engines | |