| All Patents in class 307/12 |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 434,488 | Aug. 19, 1890 | E. Thomson | Electric Power Trasmission | electric distribution systems |
| 644,865 | Mar. 06, 1900 | B.G. Lamme | System of electrical distribution | electric distribution systems |
| 850,278 | Apr. 16, 1907 | L.L. Tatum | System of distribution | electric distribution systems |
| 893,979 | Jul. 21, 1908 | J. Burke | Dynamo-electric machine | electric generators |
| 913,691 | Mar. 02, 1909 | J. Burke | Variable-speed motor | DC motors |
| 987,044 | Mar. 14, 1911 | J. Burke | Dynamo-electric machine | electric motors |
