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| All Patents in class 318/83 | |||||
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| Number | Date | Patentee | Title | Type | |
| 273,490 | Mar. 06, 1883 | T.A. Edison | Electro Magnetic Railway System | ||
| 292,382 | Jan. 22, 1884 | L.W. Stockwell | Regulator for Electric Motors | motor regulators | |