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| Patents Granted on 1977-06-07 | |||||
| Number | Date | Patentee | Title | Type | |
| 4,028,599 | Jun. 07, 1977 | F. Zankl, E.E. Kirkham, R.E. Stobbe, J.J. Schachte | Method of Controlling an A.C. Motor | machine tool controls | |