| All Patents in class 173/217 |
Patents 16 -
22
of 22
      |
| Number | Date | Patentee | Title | Type |
| 2,532,823 | Dec. 05, 1950 | H.W. Schumann | Motor tool | handheld power tools |
| 2,685,122 | Aug. 03, 1954 | C.W. Berthiez | Turret-Head for Machine-Tools with Rotating Spindle such as Milling and Boring Machines and the Like | milling machine accessories |
| 2,730,635 | Jan. 10, 1956 | J.A. McCabe | Portable electric drills | handheld power drills |
| 2,965,774 | Dec. 20, 1960 | E.C. Rangus | Casing structure for portable tool | handheld power tools |
| 2,976,436 | Mar. 21, 1961 | N. Anton | Multi-speed drill | handheld power drills |
| 4,077,736 | Mar. 07, 1978 | M.L. Hutchens | Drill Speeder for Machine Tools | milling machine accessories |
| 6,199,642 | Mar. 13, 2001 | D.A. Nowak, J.M. Beer, T.P. Becker | Reversible Ratchet Power Tool with Synchronized Motor and Ratchet Control | |
