| All Patents in class 310/239 |
Patents 1 -
15
of 20
      |
| Number | Date | Patentee | Title | Type |
| 171,087 | Dec. 14, 1875 | J. Bishop | Electro Magnetic Engines | electric motors |
| 294,165 | Feb. 26, 1884 | C.J. Van Depoele | Motor for Electric Regulators | motor regulators |
| 583,933 | Jun. 08, 1897 | E.S. Pillsbury | Electric Motor | |
| 633,641 | Sep. 26, 1899 | C.A. Eck | Dynamo-electric machine | electric motors |
| 805,499 | Nov. 28, 1905 | S.D. Stoycheff | Electric drill | handheld power drills |
| 928,084 | Jul. 13, 1909 | L.E. Underwood | Insulating-stud | electric motor making |
| 942,382 | Dec. 07, 1909 | A. Kimble | Motor-controller | woodworking electrics |
| 1,168,021 | Jan. 11, 1916 | C.B. Mills | Brush-holder for dynamo-electric machines | electric motors |
| 1,395,440 | Nov. 01, 1921 | A.T. Lochner | Brush-holder | motor brush holders |
| 1,475,153 | Nov. 20, 1923 | H. Athenas | Portable electric combination drill | handheld power drills |
| 1,521,605 | Jan. 06, 1925 | F. Diehl | Brush holder for dynamo-electric machines | motor brush holders |
| 1,991,356 | Feb. 19, 1935 | G.R. Anderson | Brush Holder for Electric Machines | motor brush holders |
| 2,463,097 | Mar. 01, 1949 | J.D. Gayer | Brush holder | motor brush holders |
| 2,475,560 | Jul. 05, 1949 | G.H. Brown | Electric motor | vacuum cleaners |
| 2,483,524 | Oct. 04, 1949 | S.S. Brown | Electric motor construction | motor cooling |
