| All Patents in class 310/232 |
Patents 1 -
7
of 7
      |
| Number | Date | Patentee | Title | Type |
| 633,972 | Sep. 26, 1899 | B.G. Lamme | Current-collector for electrical machines | electric motors |
| 866,667 | Sep. 24, 1907 | E. Mattman | Means for fastening collector-leads | electric motors |
| 1,013,218 | Jan. 02, 1912 | W.E. Reed | Induction-motor | induction motors |
| 1,108,940 | Sep. 01, 1914 | C.W. Starker | Collector-ring | induction motors |
| 2,718,604 | Sep. 20, 1955 | G.H. Herrick | Collector Ring Assembly | electric generators |
| 2,724,067 | Nov. 15, 1955 | G.H. Herrick | Axial Air Gap Generator | electric alternators |
| 3,265,914 | Aug. 09, 1966 | R.J. Derber, F.R. Derby | Collector Ring Assembly | electric generators |
