What were ALL the inventions Alexander Graham Bell invented other than the telephone?

Within a decade, over 6,000 companies went into the telephone business across the country. January 25, 1915, held the opening ceremony of the transcontinental telephone line, and to give it more prestige, it is Bell in New York (Office of the American Telephone and Telegraph Company) and Watson in San Francisco, who are invited to make the first transcontinental phone call! (photo on the right).

When Alexander Graham Bell dies in 1922 in his house of summer of Baddeck, thirteen million telephones are already sold. June 2002, the U.S. House of Representatives officially recognized the role of the Italian-American Antonio Meucci in the invention of the telephone. Indeed, in 1989, Basilio Catania, ex-Director General of CSELT (the research agency and development of Italian telecoms), discovers the work of Antonio Meucci.

Until then, nobody had ever questioned the paternity of Bell invented the telephone. December 12, 1871, Antonio Meucci founded the Telettrofono Company with three partners and 28 December, he protects his invention (Telettrofono) by a "warning patent" formula renewable cheaper than a patent. For lack of financial resources, Meucci is seen unable to renew it before its expiry, in 1874.

Two years later, in 1876, Bell filed his patent. Convinced of having stolen his invention, Meucci suing him. The trial lasted until 1889, when the death of Meucci ends proceedings, without the inventorship of the phone is recognized in him.