Guglielmo Marconi , 1st Marquis of Marconi ( Italian : ( ɡuʎˈʎɛːlmo maɾˈkoːni ) ; 25 April 1874 - 20 July 1937 ) was an Italian inventor and electrical engineer , known for his pioneering work on long-distance radio transmission and for his development of Marconi 's law and a radio telegraph system .
Guglielmo Marconi ( ɡuʎˈʎɛːlmo marˈkoːni ; 25 April 1874-20 July 1937 ) was an Italian inventor , known for being a major part of inventing long distance radio communication and for his development of Marconi 's law and a radio telegraph system .