Valdemar Poulsen
Inventor
1869 – 1942
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Who was Valdemar Poulsen?
Valdemar Poulsen was a Danish engineer who developed a magnetic wire recorder in 1899.
Citation
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"Valdemar Poulsen." Biographies.net. STANDS4 LLC, 2021. Web. 14 Apr. 2021. <https://www.biographies.net/people/en/valdemar_poulsen>.