British Ozaphone: Difference between revisions
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Duo-Trac "Cell-o-Phone", a sound recorder that used cellophane tapes and an optical sound reproduction system. | |||
1939 Demonstration of a new speech and music-reproduction system given on board a ship in the London Docks by [[International Marine Radio Co]] in collaboration with [[British Ozaphone]], Ltd. | |||
== See Also == | == See Also == | ||
Latest revision as of 11:17, 14 January 2025
Duo-Trac "Cell-o-Phone", a sound recorder that used cellophane tapes and an optical sound reproduction system.
1939 Demonstration of a new speech and music-reproduction system given on board a ship in the London Docks by International Marine Radio Co in collaboration with British Ozaphone, Ltd.
See Also
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