Who invented the telephone?
US Patent Office
Patent submission on October 11, 1880 for "Apparatus for Transmitting Sound by Electricity," by Amos E. Dolbear, of Somerville, Massachusetts.
To all whom it may concern: Be it known that I, Amos E. Dolbear, of Somerville, in the county of Middlesex and State of Massachusetts, have invented a new Apparatus for Transmitting Sound by Electricity, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings.... ... ... My invention consists, mainly, in a new mode of transmitting articulate and other sounds by an open circuit. ... ...