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Tomas Eddison had made the plans for the phonograph but his mechanic made it
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Thomas Edison was working on two of his most notable inventions, the telephone and telegraph. In the process, he invented the phonograph to play back recorded sounds. -
Tomas Edison used a company to sell his invention.
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The graphophone was invented by Charles Summer Trainer of the Alexander Grandam Bell company. -
Emile Berliner invents a better quality of the phonograph.
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Tomas Edison bought the company that bought the phonograph. -
Edison did not own the North American Phonograph. He declared bankruptcy of the North American Phonograph company.
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The most common size of a record was 10 inches and 12inches diameter.