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| Patents for George E. Folk | |||||
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| Number | Date | Patentee | Title | Type | |
| 984,904 | Feb. 21, 1911 | A.E. Greene | Rotary engine | rotary engines | |
| 1,007,866 | Nov. 07, 1911 | A.E. Greene | Rotary engine | rotary steam engines | |
| 1,040,485 | Oct. 08, 1912 | A.H. Adams | Thread-rolling machine | ||