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Patents for Frank W. Dunning | |||||
Number | Date | Patentee | Title | Type | |
244,807 | Jul. 26, 1881 | A.J. Hoag | Reversing Gear for Steam Traction Engines | traction engine propulsion components | |
RE9,951 | Nov. 29, 1881 | A.J. Hoag | Reversing Gear for Steam Traction Engines | traction engine propulsion components | |
303,516 | Aug. 12, 1884 | A.J. Hoag | Traction Engine | traction engine suspensions |