Search Results www.props.eric-hart.com Alexander Graham Bell was awarded the first U.S. patent for the invention of the telephone in 1876. Elisha Gray, 1876, designed a telephone using a water microphone in Highland Park, Illinois. There were disputes as to which patient was the original invention, both patients were approved and formed within two hours on the same day. (Wikipedia) By Elisha Gray and Alexander Graham Bell - Photo illustration based on Alexander Graham Bell's notebooks and a patent caveat filed by Elisha Gray . Featured in Seth Schulman's book en:The Telephone Gambit and his notes at [1] , Public Domain, Link A microphone , colloquially nicknamed mic or mike ( / ˈ m aɪ k / ), [1] is a transducer that converts sound into an electrical signal . Other minor variations and improvements were made to the liquid microphone by ...