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| All Patents in class 318/771 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,072,422 | Sep. 09, 1913 | J. Burke | Electric controlling apparatus | motor controls | |
| 2,727,215 | Dec. 13, 1955 | S.S. Brown | Selector switch | electric motors | |
| 2,785,511 | Mar. 19, 1957 | J.C. Wilson | Grinding Machine and Method of Operation | surface grinders | |