| All Patents in class 310/90 |
Patents 16 -
30
of 30
      |
| Number | Date | Patentee | Title | Type |
| 2,696,569 | Dec. 07, 1954 | H.W. Schumann | Motor Tool | handheld grinders |
| 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 |
| 2,847,593 | Aug. 12, 1958 | L.G. Selbach, H.C. Bodine | Electric motor | motor bearings |
| 2,964,660 | Dec. 13, 1960 | G.H. Herrick, R.H. Prescott, J.C. Moerk | Submersible Dynamoelectric Machine | electric motors |
| 2,976,438 | Mar. 21, 1961 | F.G. Luber, R.I. Robinson, A.M. Moody | Electric gear-motor drive unit | gear motors |
| 3,087,078 | Apr. 23, 1963 | S.S. Brown | Compact motor | gear motors |
| 3,112,419 | Nov. 26, 1963 | G.A. Dobslaw | Bearing and brush retainer | motor brush holders |
| 3,207,934 | Sep. 21, 1965 | R.I. Robinson, B.T. Hein, J.W. Purman | Electric motor with improved cooling means | motor cooling |
| 3,225,698 | Dec. 28, 1965 | D.R. Spisiak | Hermetic motor-pump construction | |
| 3,484,633 | Dec. 16, 1969 | F.L. Stecher | Rotor Shaft Bearing for Submersible Pumps | submersible pumps |
| 3,529,874 | Sep. 22, 1970 | G.W. Hoddy | Bearing structure | motor bearings |
| 3,536,943 | Oct. 27, 1970 | L.H. Bowen, III, J.W. Sellers | Electrically powered hand tool | handheld power drills |
| 3,857,051 | Dec. 24, 1974 | O.W. Ehrhardt, D.J. Seicher | Rotary Position Transducer Assembly Using Hydrostatic Bearings | metalworking machine mechanisms |
| 6,617,731 | Sep. 09, 2003 | P.R. Linehan, D.J. Goodnick | Rotary Pump with Bearing Wear Indicator | rotary pumps |
