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| All Patents in class 242/480.8 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,186,820 | Jan. 09, 1940 | P.E. Chapman | Coil winding machine | electric motor making | |
| 2,259,291 | Oct. 14, 1941 | P.E. Chapman | Traverse mechanism for winding machines | electric motor making | |