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| All Patents in class 310/216.012 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,046,834 | Dec. 10, 1912 | C.B. Mills | Core structure for dynamo-electric machines | motor armatures | |
| 1,150,049 | Aug. 17, 1915 | F.S. Martin | Laminated structure | motor armatures | |
| 1,408,890 | Mar. 07, 1922 | A. Kimble | Method of making dynamo-electric machines | induction motors | |
| 1,599,415 | Sep. 14, 1926 | J.T. Janette | Rotor for electric motors | electric motor making | |