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| Patents Granted on 1989-08-15 | |||||
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| Number | Date | Patentee | Title | Type | |
| 4,856,153 | Aug. 15, 1989 | N.V. Gusching | Spindle Mechanism | metalworking machine mechanisms | |
| 4,856,386 | Aug. 15, 1989 | H.L. Rodriguez | Socket assembly for multiple size wrenching surfaces | wrench sockets | |