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| Patents for Eyvind W. Petersen | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,954,828 | Apr. 17, 1934 | E.W. Petersen | Magneto Construction | magnetos | |
| 1,978,688 | Oct. 30, 1934 | E.W. Petersen | Motor Generator Assembly | motor generators | |
| 2,005,201 | Jun. 18, 1935 | E.W. Petersen, W.A. Singer | Induction Machine | induction motors | |
| 2,012,021 | Aug. 20, 1935 | E.W. Petersen | Method of Forming Rotors | electric motor making | |