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| Patents for George H. Hayes | |||||
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| Number | Date | Patentee | Title | Type | |
| 764,282 | Jul. 05, 1904 | W.O. Duntley | Battery-cell | ||
| 871,086 | Nov. 12, 1907 | W.O. Duntley, G.H. Hayes | Engine | pneumatic tools | |