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| All Patents in class 322/61 | |||||
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| Number | Date | Patentee | Title | Type | |
| 390,721 | Oct. 09, 1888 | N. Tesla | Dynamo-Electric Machine | ||
| 1,016,866 | Feb. 06, 1912 | G. Winter, F. Eichberg | Alternating-current dynamo-electric apparatus | electric motors | |