| All Patents in class 29/597 |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 473,567 | Apr. 26, 1892 | C.G. Curtis | Commutator Connection for Electric Motors or Generators | electric motors |
| 1,195,861 | Aug. 22, 1916 | E.F. Smith | Manufacture and construction of commutators | handheld power tools |
| 1,284,362 | Nov. 12, 1918 | W.H. Kempton | Molded commutator-cylinder | motor commutators |
| 1,360,165 | Nov. 23, 1920 | C.C. Zenk | Method for making commutators | machine making |
| 2,354,551 | Jul. 25, 1944 | M.B. Sawyer | Electromagnetic apparatus and method of making the same | induction motors |
| 3,421,212 | Jan. 14, 1969 | E.W. Chabot | Method of producing commutator lead connection | handheld power tools |
