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| All Patents in class 318/246 | |||||
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| Number | Date | Patentee | Title | Type | |
| 294,095 | Feb. 26, 1884 | E. Thomson | Electric Power Distribution System | electric distribution systems | |
| 390,820 | Oct. 09, 1888 | N. Tesla | Regulator for Alternate-Current Motors | ||
| 1,786,772 | Dec. 30, 1930 | J.D. Nies | Motor-control means | electric motors | |
| 2,403,034 | Jul. 02, 1946 | C.S. Weyandt, E.J. Missien | Intermittent current operated motor | handheld power tools | |