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| All Patents in class 310/203 | |||||
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| Number | Date | Patentee | Title | Type | |
| 570,424 | Oct. 27, 1896 | S.G. Brinkman | Electric motor | electric motors | |
| 714,721 | Dec. 02, 1902 | R. Lundell | Armature Winding for Electric Motors or Dynamos | motor windings | |
| 2,622,217 | Dec. 16, 1952 | G.R. Anderson, Jr. | Single Phase Winding | induction motors | |