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| All Patents in class 310/115 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 910 | Sep. 08, 1838 | S. Stimpson | Improved apparatus for the application of electro-magnetism as a motive power | |
| 138,855 | May 13, 1873 | S.C. Carter | Electro-Magnetic Motors | ||