| All Patents in class 310/244 |
Patents 1 -
15
of 17
      |
| Number | Date | Patentee | Title | Type |
| 171,087 | Dec. 14, 1875 | J. Bishop | Electro Magnetic Engines | electric motors |
| 227,623 | May 18, 1880 | W.W. Griscom | Electro-Magnetic Motor | DC motors |
| 334,823 | Jan. 26, 1886 | N. Tesla | Commutator for dynamo-electric machines | |
| 345,336 | Jul. 13, 1886 | E. Thomson | Commutator brush | motor brushes |
| 397,492 | Feb. 12, 1889 | R. Eickemeyer | Brush for electric generators | electric generators |
| 410,670 | Sep. 10, 1889 | C.D. Jenney | Brush-holder for dynamo-electric machines | motor brush holders |
| 466,448 | Jan. 05, 1892 | F.J. Sprague | Commutator-brush and holder for dynamo-electric machines and motors | motor brushes |
| 684,188 | Oct. 08, 1901 | J. Burke | Brush-holder | motor brush holders |
| 714,769 | Dec. 02, 1902 | C. Zabel, B. Zabel, W. Zabel | Carbon Holder for Dynamo Electric Machines | motor brush holders |
| 784,102 | Mar. 07, 1905 | J. Burke | Brush-holder for dynamo-electric machines | motor brush holders |
| 909,057 | Jan. 05, 1909 | J. Burke | Electric motor | electric motors |
| 909,834 | Jan. 12, 1909 | M. Walker | Brush Holder for Dynamo Electric Machines | motor brush holders |
| 924,716 | Jun. 15, 1909 | C.E. Zachau | Brush Holder for Dynamo Machines or Motors | motor brush holders |
| 942,264 | Dec. 07, 1909 | A. Kimble | Brush-holder | motor brush holders |
| 967,474 | Aug. 16, 1910 | R.B. Williamson | Brush-holder | motor brush holders |
