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| All Patents in class 277/429 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,224,260 | May 01, 1917 | C.O. Bergstrom | Oil-deflector | electric motors | |
| 2,381,914 | Aug. 14, 1945 | J. Leflar, V.L. Darnell | Motor housing | motor housings | |