The invention that completely revolutionized communication. In the 1870s, Alexander Graham Bell and Elisha Gray both invented devices that could transmit voice reflectionally. Surprisingly both men finished their designs within hours of one another, and both rushed to the patent office to have their invention verified as original. Ultimately, it was Bell who arrived first and is now credited with the invention, although Gray challenged this assertion for quite some time. His invention was much more successful than attempts by other people to create something similar, and he ultimately wound up victorious as the true inventor of the telephone.