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| All Patents in class 292/307R | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,679,457 | Aug. 07, 1928 | J.B. Wiard | Dynamo-electric machine | motor cooling | |
| 2,003,155 | May 28, 1935 | E.M. Pfauser | Reversible Friction Clutch | ratchet wrenches | |
| 2,228,326 | Jan. 14, 1941 | R.E. Rau | Snap seal | ||