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| Patents Granted on 1983-08-30 | |||||
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| Number | Date | Patentee | Title | Type | |
| 4,400,859 | Aug. 30, 1983 | P.J. Finet, R.T. Woythal | Machining Centers for Machining Tubular Workpieces | milling machines | |
| 4,402,032 | Aug. 30, 1983 | B.W. Wilterdink | Electromagnet Power Supply and Demagnetizer | magnetic chucks | |