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| All Patents in class 310/401 | |||||
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| Number | Date | Patentee | Title | Type | |
| 631,518 | Aug. 22, 1899 | J. Burke | Electric motor or generator | motor frames | |
| 984,260 | Feb. 14, 1911 | H.G. Berentsen | Dynamo-electric machine | induction motors | |
| 1,033,188 | Jul. 23, 1912 | C.C. Mitchell | Dynamo-electric machine | electric motors | |
| 1,104,784 | Jul. 28, 1914 | G. Dunn | Dynamo-electric machine frame | electric motors | |
| 1,185,366 | May 30, 1916 | J. Burke | Dynamo-electric machine | motor stators | |