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| All Patents in class 200/183 | |||||
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| Number | Date | Patentee | Title | Type | |
| 613,735 | Nov. 08, 1898 | N. Tesla | Electric-Circuit Controller | ||
| 2,138,279 | Nov. 29, 1938 | R.F. Kneisley | Control switch | woodworking machine mechanisms | |
| 2,147,506 | Feb. 14, 1939 | R.S. Stoner | Floating weight electric switch | electric switches | |