The Columbia grafonola is also called a graphophone. It was the name and
trademark of an improved version of the phonograph. It was invented at the Volta
laboratory and established by Alexander Graham Bell. It took five years of
research to develop and distinguish this machine from Thomas Edison's
phonograph. This machine is far easier to handle then previous machines. In 1885
the Volta Laboratory Associates filed patent applications and sought out
investors for the machine.
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