The patent stories of most of the revolutionary inventions are controversial. The same is the case for telephones. Alexander Graham Bell and Professor Elisha Gray filed the patent application for the telephone on February 14, 1876. For Bell, fortunately, his lawyer arrived earlier and applied Gray’s counsel. The US patent office granted US Patent Number 174,465 to the Scottish-born inventor who successfully transferred the sound waves converted into electric current and again reproduced the sound.
