Morse, Samuel F.B.
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Telegraph
Samuel F. B. Morse conceived of an electromagnetic telegraph in 1832 and constructed an experimental version in 1835. He did not construct a truly practical system until 1844, when he built a line from Baltimore to Washington, D.C. This model incorporates basic features of the 1844 receiver. It accompanied an application for a patent, granted in 1849, in which he described a method for marking ...
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