| All Patents of Type: electrical devices |
Patents 1 -
15
of 1372
      |
| Number | Date | Patentee | Title | Type |
| 8,736X | Mar. 31, 1835 | D. Harrington | Galvanic electricity applied to cure diseases | electric batteries |
| 132 | Feb. 25, 1837 | T. Davenport | Improvement in propelling machinery by magnetism and electro-magnetism | DC motors |
| 809 | Jun. 27, 1838 | N. Walkly | Improved mode of changing the poles of electro-magnets | electric motors |
| 910 | Sep. 08, 1838 | S. Stimpson | Improved apparatus for the application of electro-magnetism as a motive power | electric motors |
| 17,355 | May 19, 1857 | M.G. Farmer, W.F. Channing | Electromagnetic Fire Alarm Telegraph for Cites | telegraphic apparatus |
| 21,492 | Sep. 14, 1858 | J.M. Batchelder, M.G. Farmer | Telegraph Insulator | telegraphic apparatus |
| 26,558 | Dec. 27, 1859 | G.W. Beardslee | Improved magneto-electric machine | electric motors |
| CS-104 | Aug. 06, 1862 | W.S. Morris | Composition for Galvanic Batteries | electric batteries |
| 96,332 | Nov. 02, 1869 | G. Little | Improvement in Electro-Magnetic Motors | electric motors |
| CA-686 | Nov. 05, 1870 | H. Wood | Improvement in electro magnetic machines and magnets | electric motors |
| CA-919 | Apr. 11, 1871 | A. Ross, M.H. Utley | Improvements on electro-magnetic motors | electric motors |
| 120,057 | Oct. 17, 1871 | Z. Gramme, E.L. d'Ivernois | Improvement in magneto-electric machines | electric generators |
| 138,855 | May 13, 1873 | S.C. Carter | Electro-Magnetic Motors | electric motors |
| 159,028 | Jan. 26, 1875 | G.F. Green | Improvement in electro-magnetic dental tools | electrical devices |
| 171,087 | Dec. 14, 1875 | J. Bishop | Electro Magnetic Engines | electric motors |
