In 1869, Elisha Gray and his partner Enos M. In 1867 Gray received a patent for the invention, the first of more than seventy. In 1865, Gray invented a self-adjusting telegraph relay that automatically adapted to varying insulation of the telegraph line. In 1862, while at Oberlin, Gray met and married Delia Minerva Shepard. Although Gray did not graduate, he taught electricity and science there and built laboratory equipment for its science departments. He spent several years at Oberlin College where he experimented with electrical devices. Gray was born in Barnesville, Ohio, the son of Christiana (Edgerton) and David Gray. He was one of the founders of Graybar, purchasing a controlling interest in the company shortly after its inception. Gray is also considered to be the father of the modern music synthesizer, and was granted over 70 patents for his inventions. Although Gray had been using liquid transmitters in his telephone experiments for more than two years previously, Bell's telephone patent was upheld in numerous court decisions.
Some recent authors have argued that Gray should be considered the true inventor of the telephone because Alexander Graham Bell allegedly stole the idea of the liquid transmitter from him. Gray is best known for his development of a telephone prototype in 1876 in Highland Park, Illinois. Elisha Gray (Aug– January 21, 1901) was an American electrical engineer who co-founded the Western Electric Manufacturing Company.
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