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| Patents Granted on 1991-01-08 | |||||
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| Number | Date | Patentee | Title | Type | |
| 4,982,509 | Jan. 08, 1991 | B.D. Wixey, T.L. Panian, D.J. Luttmer, R.L. Wilson | Measurement system having multiple display orientations | ||
| 4,982,612 | Jan. 08, 1991 | N.C. Rittmann | Torque Wrench with Measurements Independent of Hand-Hold Position | torque wrenches | |