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| All Patents in class 310/189 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 315,179 | Apr. 07, 1885 | F.J. Sp | Electric Dynamic Motor | ||
| 315,180 | Apr. 07, 1885 | F.J. Sprague | Electro Dynamic Motor | ||
| 315,183 | Apr. 07, 1885 | F.J. Sprague | Electro Dynamic Motor | ||
| 1,084,590 | Jan. 13, 1914 | H.L. Zabriskie | Electric motor | ||