| All Patents in class 310/50 |
Patents 31 -
45
of 73
      |
| Number | Date | Patentee | Title | Type |
| 1,712,261 | May 07, 1929 | F.E. Farley | Switch for power drills | handheld power drills |
| 1,722,816 | Jul. 30, 1929 | L.F. Meunier | Cable connection for portable tools | handheld power tools |
| 1,750,957 | Mar. 18, 1930 | C.D. Fowler | Drill attachment | handheld power tool accessories |
| 1,785,798 | Dec. 23, 1930 | T.C. Weiss | Motor driven tool | handheld power drills |
| 1,805,164 | May 12, 1931 | R.L. Carter | Shaft holder for applying chucks | handheld routers |
| 1,828,903 | Oct. 27, 1931 | W. Moretti | Electric tool | handheld power drills |
| 1,929,662 | Oct. 10, 1933 | F.W. Wappat | Motor driven tool switch | handheld power tools |
| 2,015,535 | Sep. 24, 1935 | E.P. Sacrey | Cutting instruments | handheld power jigsaws |
| 2,097,729 | Nov. 02, 1937 | A.W. Mall | Portable power machine | |
| 2,119,986 | Jun. 07, 1938 | A.J. Dremel | Electric motor | handheld power tools |
| 2,123,222 | Jul. 12, 1938 | F.O. Albertson | Handheld disc sander | handheld power sanders |
| 2,141,971 | Dec. 27, 1938 | C. Desoutter | Portable electric drill and the like | handheld power drills |
| 2,155,082 | Apr. 18, 1939 | A.G. Decker | Portable electric tool and casing | handheld power drills |
| 2,170,036 | Aug. 22, 1939 | R. Schumann | Small electric machine tool | handheld power tools |
| 2,218,168 | Oct. 15, 1940 | T.L. Hedgpeth | Power tool | handheld power tools |
