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| Patents Granted on 1980-06-24 | |||||
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| Number | Date | Patentee | Title | Type | |
| 4,208,930 | Jun. 24, 1980 | O. Hermann | Spindle Control Mechanism | machine tool controls | |
| 4,209,195 | Jun. 24, 1980 | W.K. Holmes | Expandable Spreader Control Circuit | machine spreaders | |