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| All Patents in class 318/82 | |||||
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| Number | Date | Patentee | Title | Type | |
| 298,550 | May 13, 1884 | C.G. Burke | Regulator for Electric Motors | motor regulators | |
| 520,748 | May 29, 1894 | J.S. Bancroft | Method of Operating Electric Motors | motor controls | |