| All Patents in class 310/50 |
Patents 46 -
60
of 73
      |
| Number | Date | Patentee | Title | Type |
| 2,267,781 | Dec. 30, 1941 | F.O. Albertson | Electric sanding machine | handheld power sanders |
| 2,297,988 | Oct. 06, 1942 | M.B. Sawyer | Motor construction | induction motors |
| 2,301,156 | Nov. 03, 1942 | G.D. Behlen | Ventilation system for portable power tools | handheld power tools |
| 2,468,469 | Apr. 26, 1949 | G.E. Smith | Handle structure for portable tools | handheld power drills |
| 2,532,823 | Dec. 05, 1950 | H.W. Schumann | Motor tool | handheld power tools |
| 2,696,569 | Dec. 07, 1954 | H.W. Schumann | Motor Tool | handheld grinders |
| 2,730,635 | Jan. 10, 1956 | J.A. McCabe | Portable electric drills | handheld power drills |
| 2,763,802 | Sep. 18, 1956 | F.D. Dolan | Portable motor tool and method of assembling same | handheld circular saws |
| 2,779,883 | Jan. 29, 1957 | H.W. Schumann | Motor tool | handheld power tools |
| 2,876,369 | Mar. 03, 1959 | O. Doerner | Portable power drill | handheld power tools |
| 2,898,956 | Aug. 11, 1959 | W.B. Zern | Brake for electric hand tool | handheld routers |
| 2,965,774 | Dec. 20, 1960 | E.C. Rangus | Casing structure for portable tool | handheld power tools |
| 3,085,169 | Apr. 09, 1963 | G.J. Abel | Speed-setting indicators for portable electric tools | handheld power drills |
| 3,121,813 | Feb. 18, 1964 | L.C. Pratt, J.G. Raymond | Electric power unit | handheld power drills |
| 3,344,291 | Sep. 26, 1967 | L.C. Pratt | Double insulated hand tool | handheld power tools |
