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| Patents for Alois V. Dryak | |||||
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| Number | Date | Patentee | Title | Type | |
| 4,173,786 | Nov. 06, 1979 | A.V. Dryak, R.C. Tanner, T.J. Kuhnell | Method and Apparatus for Cutting a Thread on a Rotating Workpiece | machine tool controls | |