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| All Patents of Type: motor frames | |||||
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| Number | Date | Patentee | Title | Type | |
| 627,488 | Jun. 27, 1899 | C.A. Eck | Frame or yoke for dynamo-electric machines | motor frames | |
| 631,518 | Aug. 22, 1899 | J. Burke | Electric motor or generator | motor frames | |
| 1,452,143 | Apr. 17, 1923 | J. Burke | Dynamo frame and method of forming the same | motor frames | |
| 1,456,120 | May 22, 1923 | J. Burke | Magnet frame | motor frames | |