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| All Patents in class 318/816 | |||||
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| Number | Date | Patentee | Title | Type | |
| 511,560 | Dec. 26, 1893 | N. Tesla | System of Electrical Power Transmission | ||
| 620,966 | Mar. 14, 1899 | E.W. Rice, Jr., C.P. Steinmetz | Induction Motor | induction motors | |
| 1,271,524 | Jul. 02, 1918 | J. Burke | Selective motor | motor controls | |