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| All Patents in class 318/289 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 2,619,621 | Nov. 25, 1952 | S.S. Brown | Electric motor and selector switch therefor | |
 | 2,664,473 | Dec. 29, 1953 | S.S. Brown | Selector switch | |