| All Patents in class 81 |
Patents 6541 -
6555
of 6889
      |
| Number | Date | Patentee | Title | Type |
| 2,953,903 | Sep. 27, 1960 | L. Kramer, D.K. Skoog | Hydraulic system for operating simultaneously a plurality of power units | |
| 2,954,715 | Oct. 04, 1960 | C.E. Wycech | Open Head Ratchet Wrench | ratchet wrenches |
| 2,954,994 | Oct. 04, 1960 | R.T. Beers | Socket Retainer for Rotary Power Tools | wrench sockets |
| 2,957,377 | Oct. 25, 1960 | T.G. Hare | Reversible Ratchet Type Wrench | ratchet wrenches |
| 2,959,078 | Nov. 08, 1960 | R.H. Skidmore | Predetermined Torque Release Wrench | torque wrenches |
| 2,962,918 | Dec. 06, 1960 | W.E. Van Hoose | Predetermined Torque Release Wrench | torque wrenches |
| 2,966,818 | Jan. 03, 1961 | O.P. Froeschl | Plier Type Toggle Wrench With Unlocking Means | locking pliers |
| 2,972,271 | Feb. 21, 1961 | M.J. Gill | Predetermined Torque Release Hand Tool | torque wrenches |
| 2,977,824 | Apr. 04, 1961 | T.O. Rueb | Wrench Making Method | making wrenches |
| 2,978,081 | Apr. 04, 1961 | D.M. Lundin | Devices in Ratchet Wrenches | ratchet wrenches |
| 2,982,160 | May 02, 1961 | R.T. Little | Spinner Drive Means For a Ratchet Wrench | ratchet wrenches |
| 2,982,161 | May 02, 1961 | M.L. Peterson, T.F. Angquist | Ratchet Wrench | ratchet wrenches |
| 2,987,334 | Jun. 06, 1961 | L.J. Wendling | Tool holders | tool holders |
| 2,989,881 | Jun. 27, 1961 | R.P. Lavietes | Multiple Use Hand Tool Having A Ratchet Handle | ratcheting screwdrivers |
| 2,993,398 | Jul. 25, 1961 | E.F. Schlote | Slidable Jaw End Wrench With Spiral Actuator | quick adjust wrenches |
