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| Patents for Karl F. W. Kempf | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,972,051 | Aug. 28, 1934 | K.F. Kempf | Upsetting Machine | upsetting machines | |
| 2,572,492 | Oct. 23, 1951 | K.F. Kempf | Method of Making Adjustable Jaw Wrenches | screw adjust wrenches | |