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| Patents Granted on 1972-04-04 | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,653,282 | Apr. 04, 1972 | C.A. Nielsen, R.D. Bouffiou | Power Tool Turret Assembly | metalworking machine mechanisms | |
| 3,653,489 | Apr. 04, 1972 | L.C. Tullis | Power Conveyor System for Production Lines | workpiece changers and storage mechanisms | |