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| All Patents in class 200/275 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 1,665,550 | Apr. 10, 1928 | J.T. Janette | Contact holder | ||
| 1,682,790 | Sep. 04, 1928 | J.T. Janette | Electrical contact | ||
| 2,478,690 | Aug. 09, 1949 | E.L. Rucks, W.C. Furnas | Rotary reversing switch | ||