| All Patents in class 310/91 |
Patents 16 -
24
of 24
      |
| Number | Date | Patentee | Title | Type |
| 1,584,071 | May 11, 1926 | G.A. Arnold | Drill supporting and feeding apparatus | handheld power drills |
| 1,611,042 | Dec. 14, 1926 | M.K. Akers, H.L. Johnston | Variable-speed mechanism | |
| 1,611,381 | Dec. 21, 1926 | A.L. Salsbury | Routing machine | handheld routers |
| 1,745,780 | Feb. 04, 1930 | W.P. Casey | Woodworking machine | handheld routers |
| 1,786,192 | Dec. 23, 1930 | O. Cullman | Support for Electric Motors | motor mounts |
| 1,874,232 | Aug. 30, 1932 | W.F. Groene, L.D. Reed | Routing device | handheld routers |
| 1,899,883 | Feb. 28, 1933 | E.P. Sacrey | Adjustable and interchangeable mounting for motor driven tools | handheld routers |
| 2,590,093 | Mar. 25, 1952 | C.F. Duerr, Jr. | Hand-operated motor-driven radial machine tool | radial arm saws |
| 6,043,575 | Mar. 28, 2000 | R.D. DeRome, M.S. Scolaro, A.P. Ghode | Power Tool with Air Deflector for Venting Motor Exhaust Air | |
