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| All Patents in class 310/216.071 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,367,298 | Feb. 01, 1921 | J. Burke | Alternating-current motor and generator | AC motors | |
| 1,945,028 | Jan. 30, 1934 | H.D. Almaine, C.F. Thompson | Reaction type synchronous motor | synchronous motors | |