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| All Patents in class 318/66 | |||||
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| Number | Date | Patentee | Title | Type | |
| 294,095 | Feb. 26, 1884 | E. Thomson | Electric Power Distribution System | electric distribution systems | |
| 316,090 | Apr. 21, 1885 | E. Weston | System for the Electrical Transmission of Power by Electricity | electric distribution systems | |
| 530,177 | Dec. 04, 1894 | L. Gutmann | Alternating electric motor | electric motors | |