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| All Patents in class 242/444 | |||||
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| Number | Date | Patentee | Title | Type | |
| 512,769 | Jan. 16, 1894 | R. Varley, Jr. | Machine for Winding Electro Magnets | wire winding machines | |
| 4,801,102 | Jan. 31, 1989 | C.R. Bradlee | Method of manufacturing coated rolls | ||