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| Patents for Edward W. Donn | |||||
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| Number | Date | Patentee | Title | Type | |
| 139,184 | May 20, 1873 | J.W. Osborne | Speed Gage | rpm speed gauges and tachometers | |
| 331,080 | Nov. 24, 1885 | L.H. Nash | Method of Operating Gas Engines | gas and gasoline engines | |