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| All Patents in class 307/17 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 351,589 | Oct. 26, 1886 | L. Gaulard, J.D. Gibbs | System of electric distribution | |
 | 381,970 | May 01, 1888 | N. Tesla | System of electrical distribution | |
 | 382,282 | May 01, 1888 | N. Tesla | Method of Converting and Distributing Electric Currents | |