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| All Patents in class 318/770 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 2,013,821 | Sep. 10, 1935 | N.S. Yost | Electric motor | |
 | 2,157,417 | May 09, 1939 | R.F. Kneisley | Automatic circuit selector | |
 | 2,619,621 | Nov. 25, 1952 | S.S. Brown | Electric motor and selector switch therefor | |
 | 2,722,645 | Nov. 01, 1955 | S.S. Brown | Voltage changer switch for a. c. motor | |