Multiplex Telegraph

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 …

…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.