On January 15, 1846, Samuel Morse received patent for an improved single-wire telegraph system.
He also helped to develop the commercial use of telegraphy. By the time of his death, his estate was valued at some $500,000 ($9.88 million today)
Patent Information
Publication number: USRE79 E
Publication type: Grant
Publication date: 15 Jan 1846
Inventors: F. B. Morse