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| Patents Granted on 1987-03-24 | |||||
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| Number | Date | Patentee | Title | Type | |
| 4,651,474 | Mar. 24, 1987 | E.C. David | Wide belt sanding machine with platen oscillating means | belt sanders | |
| 4,651,598 | Mar. 24, 1987 | W.A. Warheit | Self-adjusting utility plier | pliers | |