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| Patents Granted on 1990-09-?? | |||||
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| Number | Date | Patentee | Title | Type | |
| 4,955,261 | Sep. 11, 1990 | Y. Chiang | Automatic corkscrew | self and partial cork pullers | |
| 4,958,541 | Sep. 25, 1990 | R.T. Strobel, T.R. Herman, J.R. Annis | Electronic torque wrench with tactile indication | torque wrenches | |