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| All Patents in class 200/303 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,517,578 | Dec. 02, 1924 | W.V. Orr | Switch housing | electric switches | |
| 1,889,259 | Nov. 29, 1932 | G.J. Meuer | Electric switch | electric switches | |