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| All Patents in class 335/207 | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,194,914 | Jul. 13, 1965 | S.A. Brown | Centrifugal switch embodying magnets | centrifugal motor switches | |
| 3,210,498 | Oct. 05, 1965 | A.H. Dall | Magnetic Reed Adjustable Switching Means | centerless grinders | |