Who invented the telephone?
US Patent Office
Patent submission on February 14, 1876 for "Improvement in Telegraphy," by Alexander Graham Bell, of Salem, Massachusetts.
To all whom it may concern: Be it known that I, Alexander Graham Bell, of Salem, Massachusetts, have invented certain new and useful improvements in Telegraphy, of which the following is a specification. ... ... ...
... Having described my invention, what I claim, and desire to secure by Letters Patent, is as follows: 1. A system of telegraphy in which the receiver is set in vibration by the employment of undulatory currents of electricity, substantially as set forth. ... ... ... 5. The method of, and apparatus for, transmitting vocal or other sounds telegraphically, as herein described, by causing electrical undulations, similar in form to the vibrations of the air accompanying the said vocal or other sounds, substantially as set forth. ... ...