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| Patents Granted on 1990-04-__ | |||||
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| Number | Date | Patentee | Title | Type | |
| D307,102 | Apr. 10, 1990 | B. Desnoulez | Corkscrew | mechanical cork extractors | |
| 4,915,148 | Apr. 10, 1990 | A. Fox | Multi-purpose power tool | jointers | |
| D307,236 | Apr. 17, 1990 | M.S. Bakula, S.R. Wente, T.S. Severson, D.J. Caldwell, S.S. Cascio | Screwdriver | screwdrivers | |
| 4,919,020 | Apr. 24, 1990 | D.A. Huebschen | Spring-Loaded Magnetic Driver and Method of Assembly Thereof | ||