| All Patents in class 74/421A |
Patents 16 -
23
of 23
      |
| Number | Date | Patentee | Title | Type |
| 2,394,348 | Feb. 05, 1946 | G.C. Wilhide | Electric screw driver and nut runner | handheld power drivers |
| 2,708,851 | May 24, 1955 | J.C. Moerk | Motor Gear Assembly | electric motors |
| 2,716,350 | Aug. 30, 1955 | R.D. Phares | Slow speed converter motor drive | metalworking speed changing mechanisms |
| 2,742,797 | Apr. 24, 1956 | J.A. Perham | Multi-spindle portable power-operated tool | |
| 2,970,484 | Feb. 07, 1961 | W.E. Springer | Balancing mechanism for sabre saws and the like | handheld power jigsaws |
| 3,074,089 | Jan. 22, 1963 | S.S. Brown | Compact machine | |
| 3,087,078 | Apr. 23, 1963 | S.S. Brown | Compact motor | gear motors |
| 3,224,289 | Dec. 21, 1965 | B.N. Palm | Motorized head pulley | conveyors and hoppers |
