| All Patents in class 81/476 |
Patents 1 -
7
of 7
      |
| Picture | Number | Date | Patentee | Title |
 | 1,564,342 | Dec. 08, 1925 | O.P. Wodack, J.J. Bebhardt | Portable power-driven tool |
| | 2,031,133 | Feb. 18, 1936 | R. Schümann | Electric Hand Tool |
| | 2,398,330 | Apr. 09, 1946 | T.O. Rueb | Torque Wrench |
| | 2,427,153 | Sep. 09, 1947 | F. Mossberg | Yielding Ratchet Torque Wrench |
| | 2,731,864 | Jan. 24, 1956 | W.C. Kothe, M.L. Kapin, J.W. Davies | Torque-Release Wrench |
| | 2,839,952 | Jun. 24, 1958 | E.J. Ondeck | Reversible Power Tool Drive Attachment |
| | 4,781,086 | Nov. 01, 1988 | L.E. Johnston | Fluid Fitting Wrench |
