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| Patents for Robert H. Long | |||||
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| Number | Date | Patentee | Title | Type | |
| 26,911 | Jan. 24, 1860 | R.H. Long | Propelling Passenger Cars by Steam | railroad motor cars | |
| RE1,125 | Jan. 15, 1861 | R.H. Long | Steam Engine for Propelling Cars | railroad motor cars | |