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| All Patents in class 388/836 | |||||
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| Number | Date | Patentee | Title | Type | |
| 264,981 | Sep. 26, 1882 | E. Weston | System for the Electrical Transmission of Power | electric distribution systems | |
| 275,842 | Apr. 17, 1883 | J.C. Cebrian, E.J. Molera | Speed Regulator and Reversing Device for Electric Motors | motor regulators | |
| 284,382 | Sep. 04, 1883 | C.L. Clarke | Circuit and Apparatus for Electric Temperature and Pressure Indicator | vacuum and pressure gauges | |
| 1,053,940 | Feb. 18, 1913 | J. Burke | Universal motor | universal motors | |