| All Patents in class 310/237 |
Patents 1 -
10
of 13
      |
| Picture | Number | Date | Patentee | Title |
 | 480,728 | Aug. 16, 1892 | E. Kolben | Ring-armature |
 | 493,439 | Mar. 14, 1893 | A.W. Meston | Commutator for dynamo-electric machines and method of constructing same |
 | 526,083 | Sep. 18, 1894 | A.W. Meston | Electric motor |
 | 620,609 | Mar. 07, 1899 | F. Schwedtmann, E.S. Pillsbury | Motor |
 | 742,280 | Oct. 27, 1903 | J.H. Blair | Electric motor |
 | 772,083 | Oct. 11, 1904 | E. Bretch | Electric motor |
| | 909,834 | Jan. 12, 1909 | M. Walker | Brush Holder for Dynamo Electric Machines |
 | 922,521 | May 25, 1909 | C.A. Schnur | Short-circuiting device for electric motors |
 | 1,157,179 | Oct. 19, 1915 | E.S. Pillsbury | Centrifugal circuit-changing device for electric motors |
 | 1,209,443 | Dec. 19, 1916 | H.W. Jeannin | Alternating-current motor |
