Valdemar Poulsen
Danish engineer
Valdemar Poulsen was a Danish engineer who developed a magnetic wire recorder called the telegraphone in 1898. Wikipedia
Born: November 23, 1869, Copenhagen, Denmark
Died: July 23, 1942 (age 72 years), Gentofte, Denmark
Grandchild: Valdemar Poulsen
Children: Chr Poulsen
Parents: Rebekka Magdalene Brandt and Jonas Nicolai Johannes Poulsen
Spouse: Asta Stoltz Nielsen (m. 1923) and Frederikke Marie Rasmussen (m. 1894–1921)
Projects: magnetic wire recorder, arc converter radio transmitter