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| All Patents in class 81/52.4 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,704,472 | Mar. 22, 1955 | R.E. Booth | TORQUE APPLYING TOOL WITH PREDETERMINED TORQUE RELEASE MEANS | torque wrenches | |
| 2,887,919 | May 26, 1959 | S.A. Aijala | Predetermined torque release hand tool | torque wrenches | |
| 3,076,362 | Feb. 05, 1963 | E.T. Able | Torque wrench | torque wrenches | |
| 3,485,117 | Dec. 23, 1969 | J.R. Bailey, V.C. Tyrrell | TORQUE WRENCH | torque wrenches | |