a Danish engineer who developed a magnetic wire recorder called the telegraphone in 1898. He also made significant contributions to early radio technology...

plant operator Operator of a stationary winch, launching a hang glider. Telegraphone with operator "Society of Broadcast Engineers". Sbe.org. Retrieved 2019-06-05...

be made commercially available anywhere was the Telegraphone, manufactured by the American Telegraphone Company, Springfield, Massachusetts in 1903. The...

telephone-based recording devices with no means of amplification, such as the telegraphone, it remained so until the 1920s. Between the invention of the phonograph...

cars, dry cell batteries, electric fire engines, talking films, the telegraphone (the first magnetic audio recorder), the galalith and the matryoshka...

and played back through a loudspeaker. The first wire recorder was the Telegraphone invented by Valdemar Poulsen in the late 1890s. Wire recorders for law...

demonstrated in principle as early as 1898 by Valdemar Poulsen in his telegraphone. Magnetic wire recording, and its successor, magnetic tape recording...

Danish inventor Valdemar Poulsen (1869–1942), who was the inventor of the telegraphone steel wire magnetic recorder. Tigerstedt, too, had experimented with...

telephone-based recording devices with no means of amplification, such as the Telegraphone, it remained so until the 1920s, when several recent radio-related developments...

used in the Navy for recording radio and telephone conversations – the "telegraphone" – and the manufacturer was no longer in business. He remained in the...

Poulsen on the developmental work on Wire recorders, which he called a telegraphone, the arc converter known as the Poulsen Arc Transmitter, and his work...

of recording television signals on 'a magnetic record of the Poulsen telegraphone type'. Sound would be recorded in sync on the reverse side. These ideas...

Votey completes the first Pianola 1898 : Valdemar Poulsen patents the Telegraphone 1906 : Thaddeus Cahill introduces the Telharmonium to the public 1906 :...

661,619 for the first sound recording device, which he called the "telegraphone". In the summer of 1898, Poulsen found that a telephone, connected to...

medicine. The semi-automatic Luger pistol is patented by Georg Luger. The telegraphone, a magnetic wire recording machine, is patented by Valdemar Poulsen....

demonstrated in principle as early as 1898 by Valdemar Poulsen in his telegraphone. Magnetic wire recording, and its successor, magnetic tape recording...