On This Day In History On This Day In History: Samuel F.B. Morse Receives A Patent For His Dot-Dash Telegraphy Signals – On June 20, 1840MessageToEagle.com | June 20, 2016 MessageToEagle.com – On June 20th 1840, Samuel F.B. Morse (1791 – 1872) received a patent for the single-wire telegraph system. He was a co-developer of the Morse Code Read More