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All Patents in class 318/820 | |||||
Number | Date | Patentee | Title | Type | |
1,002,837 | Sep. 12, 1911 | A.M. Gray | Induction-motor | induction motors | |
1,256,705 | Feb. 19, 1918 | J. Lebovici | Induction-motor | induction motors | |
1,522,637 | Jan. 13, 1925 | J. Lebovici | Induction motor | induction motors |