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Magnetic Recording

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Valdemar Poulsen
Valdemar Poulsen

Valdemar Poulsen filed for his first patent for magnetic recording on 1 December 1898 in Copenhagen, Denmark. In 1929 Fritz Pfleumer patented magnetic recording tape using oxide bonded to a strip of paper or film. Bing Crosby used a similar device to record his radio show beginning in 1947.

See also: Telegraphone