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 | Joseph Henry |  | ||
Albany,
N.Y.
17.December.1797-Washington 13.May.1878
| Relays | |||
Inventor of the first relay
and is able to convey a mile for 1.6 km, in fact invented the telegraph
which was not recognized the invention for not having filed the patent,
which deposited instead Morse. Discoverer of important
principles of electricity including
auto. His honor was named the unit the
inductance in 1893. |  | |||