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| Patents for Thomas S. Severson | |||||
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| Number | Date | Patentee | Title | Type | |
| 5,117,714 | Jun. 02, 1992 | D.M. Sorbie, T.S. Severson, F. Mikic, W.T. Pagac | One-Piece, Open-End Wrenching Head with Serated Jaws | nut wrenches | |
| 5,148,726 | Sep. 22, 1992 | D.M. Sorbie, T.S. Severson, F. Mikic, W.T. Pagac, D.A. Huebschen | One-Piece, Open-End Wrenching Head with Roughened Jaws | nut wrenches | |