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Application filed by Standard Telephone & Radio SafiledCriticalStandard Telephone & Radio Sa
Publication of CH252030ApublicationCriticalpatent/CH252030A/en
H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
H04R13/00—Transducers having an acoustic diaphragm of magnetisable material directly co-acting with electromagnet
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Electromagnetism
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Engineering & Computer Science
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Acoustics & Sound
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Signal Processing
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CH252030D1942-10-301943-10-30
Device for converting electrical energy into acoustic energy or vice versa and method of manufacturing such a device.
CH252030A
(en)