| All Patents in class 310 |
Patents 16 -
30
of 1020
      |
| Number | Date | Patentee | Title | Type |
| 238,631 | Mar. 08, 1881 | C.E. Ball | Dynamo or Magneto-Electric Machine | electric generators |
| 255,236 | Mar. 21, 1882 | C.E. Ball | Electric drill | handheld power drills |
| 260,111 | Jun. 27, 1882 | T.J. McTighe, J.J. McTighe | Commutator for dynamo electric machines | motor commutators |
| 261,712 | Jul. 25, 1882 | W. Hochhausen | Commutator for Dynamo-Electric Machines | electric motors |
| 264,982 | Sep. 26, 1882 | E. Weston | Electro Magnetic Motor | DC motors |
| 269,605 | Dec. 26, 1882 | E. Thomson | Dynamo Electric Machine | electric motors |
| 271,947 | Feb. 06, 1883 | E. Thomson | Commutator for Dynamo Machines | motor commutators |
| 281,416 | Jul. 17, 1883 | E. Thomson | Dynamo Electric Machine | motor armatures |
| 283,546 | Aug. 21, 1883 | E. Weston | Electro-magnetic motor | electric motors |
| 286,030 | Oct. 02, 1883 | S. Marcus | Gas Engine | gas and gasoline engines |
| 291,650 | Jan. 08, 1884 | C.J. Van Depoele | Current Regulator for Electric Motors | motor regulators |
| 291,728 | Jan. 08, 1884 | E. Hester | Joiner's Marking-Gage | marking gauges |
| 293,556 | Feb. 12, 1884 | W. Bradbury | Electric Motor | electric motors |
| 294,165 | Feb. 26, 1884 | C.J. Van Depoele | Motor for Electric Regulators | motor regulators |
| 302,554 | Jul. 29, 1884 | W.K. Freeman | Armature for Dynamo Electric Machines or Motors | electric motors |
