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| All Patents in class 477/7 | |||||
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| Number | Date | Patentee | Title | Type | |
| 588,104 | Aug. 10, 1897 | R. Eickemeyer | Electric Locomotive | ||
| 1,092,849 | Apr. 14, 1914 | J.D. Nies | Rotor construction for induction-motors | induction motors | |