Phone

1854 - Bourseul (Charles) raised in a pictorial of the time the possibility of using vibrations caused by the voice on a floppy disk or diaphragm, in order to activate and deactivate an electrical circuit and produce similar vibrations in a diaphragm located in a remote location, which would reproduce the original vibration.
1855 - Meucci (Antonio) built a phone to connect your office to your bedroom on the second floor, due to his wife's rheumatism.
1860 - Meucci brings out his invention. In a public demonstration of a singer's voice is reproduced at a considerable distance.
1861 - Meucci has an accident, Westfield steam explosion, which comes with severe burns, requiring his wife to sell the work of Antonio to a lender for $ 6 (in NYC). If, after replacement, return to recover the pawn shop selling them says a young man who was never identified.
1861 / 1870 Meucci working hard in rebuilding their greatest invention.
1869 - Gray (Elisha) is associated with Barton (Enos) and is a company that provides Western Union Telegraph Company (WUTC).
1871 / 1873 - Meucci unable to muster the $ 250 it costs the final patent, has to settle for a preliminary pending submission of documentation that records the December 28, 1871 and can afford renewed only in 1872 and 1873.
1873 - Meucci offers a demonstration of the telegraph talking to a businessman named Edward B. Grant, vice president of a subsidiary of Western Union Telegraph Company. Whenever Meucci sought to advance, he said there was room for his show.
1874 - Gray made the first public demonstration of his invention, the telephone, and it worked perfectly (a couple of years after Meucci presents his invention in WUTC, where his former friend and partner Barton).
1875 - Meucci asked them to return your material, to which he replied that it had lost (the same laboratory where WUTC Bell conducted his experiments).
1876 - Gray on February 14, 1876 the application for his invention but only two hours before such an Alexander Graham Bell had filed the patent application for his invention.
Bell's patent was still questionable because there were rumors that Bell had a confidant in the patent office which warned him in advance that happened due to the particular case were to compare the two patents to discard the worst and most expensive of the two. It is said that Bell had access to Gray's patent compare with their own and after that he added a marginal note written by hand in proposing an alternative design to yours that was identical to that of Gray.
Bell (Alexander Graham) in 1876 registered a patent then you do not really describe the telephone but refers to it as such. (Later surfaced that an agreement whereby Bell would pay the WUTC by 20% of the profits from the commercialization of his invention for 17 consecutive years).