Inventor of Multiplex Telegraph Thomas Alva Edison was born in Milan, Ohio, February 11, 1847. In 1854 the family moved to Port Huron, Michigan, where seven-year-old Tom Edison set up his first chemical laboratory in the cellar of their large house. Edison's career as a telegraph operator began when he snatched a station agent's young son from the path of a moving freight car. Out of gratitude the father taught Edison the new science of telegraphy. By the …showed first 75 words of 682 total…

…showed last 75 words of 682 total…course, Bridden and Edison got nothing from the venture. An interesting upshot, however, was that while the caprice associated with the rough and tumble world of patenting inventions in the mid-19th century ultimately crushed Bridden's innately mild spirit - along with his extraordinary potential - it merely spurred the tougher minded Edison on to improve on the above upon the duplex system later patent the first quadruplex transmitter.... 1870 - Thomas Edison invents multiplex telegraphy.