| All Patents in class 279/144 |
Patents 1 -
8
of 8
      |
| Picture | Number | Date | Patentee | Title |
| | 2,293,786 | Aug. 25, 1942 | E.C. Worden | Wrench |
| | 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 |
 | 2,752,965 | Jul. 03, 1956 | B.A. Mackey | Drill bit construction |
| | 2,931,659 | Apr. 05, 1960 | R.E. Novkov | Quick Change Tool Holder |
 | 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 |
| | 4,077,736 | Mar. 07, 1978 | M.L. Hutchens | Drill Speeder for Machine Tools |
