U.S. Patent Office Tourist attraction in Alexandria, United States

Reference:Neutrality / Public domain
Map gps coordinates: 38.801389, -77.063889
Address: 600 Dulany St, Alexandria, VA 22314, USA

In 1875, Bell developed an acoustic telegraph and drew up a patent application for it. Since he had agreed to share U.S. profits with his investors Gardiner Hubbard and Thomas Sanders, Bell requested that an associate in Ontario, George Brown, attempt to patent it in Britain, instructing his lawyers to apply for a patent in the U.S. only after they received word from Britain (Britain would issue patents only for discoveries not previously patented elsewhere). Bell's patent 174,465, was issued to Alexander Graham Bell on March 7, 1876, by the U.S. Patent Office. Bell's patent covered "the method of, and apparatus for, transmitting vocal or other sounds telegraphically ... by causing electrical undulations, similar in form to the vibrations of the air accompanying the said vocal or other sound".

Source: Wikipedia