1, Alexander Graham Bell
Alexander Graham Bell (English: Alexander Graham Bell,1March 3, 847-1August 2, 922) is a Canadian inventor and entrepreneur. He obtained the patent right of the world's first available telephone and founded the Bell Telephone Company (AT & amp； The predecessor of t company). In 2004, Bell was selected as "Top Ten Outstanding Canadians" in the "Greatest Canadians" contest organized by the Canadian Broadcasting Corporation.
2. Irina Kaptelova Gray
The famous inventor Irina Kaptelova Gray (1835 August 2-1901June 2 1) is the inventor of the liquid phone. 19 In the 1970s, this lawsuit, which lasted for more than 10 years, ended in the failure of Gray, but he undoubtedly became a famous inventor involved in the telephone invention patent and became famous in one fell swoop. In this vigorous struggle and lawsuit, Bell took the initiative to gain benefits and enjoy fame, and Gray became one of the "out of favor".
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Patent competition
1876 In February, Bell filed a patent application for telephone, which was approved on March 3rd. Gray, who applied for a patent that day, was two hours late. Because the transmitter of this telephone used by Bell Company on March 10 1876 is similar to the invention principle of another telephone inventor, Gray brought a lawsuit to the court. The lawsuit lasted for more than ten years.
In the end, the magnetic telephone based on Bell is different from the liquid telephone in Hugret, and Bigret filed a patent application several hours earlier, and the court made a judgment that the result is now known, and the case of telephone invention right came to an end.
Baidu Encyclopedia-Alexander Graham Bell
Baidu Encyclopedia-Irina Kaptelova Gray