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| All Patents in class 81/479 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,682,796 | Jul. 06, 1954 | K.R. Larson | Predetermined torque release and torque indicating wrench | torque wrenches | |
| 4,958,541 | Sep. 25, 1990 | R.T. Strobel, T.R. Herman, J.R. Annis | Electronic torque wrench with tactile indication | torque wrenches | |
| 5,130,700 | Jul. 14, 1992 | R.T. Strobel, T.R. Herman, J.R. Annis | Electronic Torque Wrench and Overshoot Compensation Circuit Therefor | torque wrenches | |