| All Patents in class 279/144 |
Patents 1 -
8
of 8
      |
| Number | Date | Patentee | Title | Type |
| 2,293,786 | Aug. 25, 1942 | E.C. Worden | Wrench | torque wrenches |
| 2,354,184 | Jul. 25, 1944 | W.W. Daniel | Drive Socket Connector | |
| 2,719,722 | Oct. 04, 1955 | A.E. Nickless | Quick Change Tool Holder | milling machine tools |
| 2,752,965 | Jul. 03, 1956 | B.A. Mackey | Drill bit construction | wood drill bits |
| 2,931,659 | Apr. 05, 1960 | R.E. Novkov | Quick Change Tool Holder | milling machine tools |
| 3,734,515 | May 22, 1973 | E.C. Dudek | Pneumatic impact wrench | |
| 3,752,595 | Aug. 14, 1973 | J.L. Kirschnik, R.T. Woythal | Adapter for Drill Speeder | metalworking machine tool holders |
| 4,077,736 | Mar. 07, 1978 | M.L. Hutchens | Drill Speeder for Machine Tools | milling machine accessories |
