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FILM RECORDING CORP
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FILM RECORDING CORP
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Application filed by FILM RECORDING CORPfiledCriticalFILM RECORDING CORP
Application grantedgrantedCritical
Publication of FR858640ApublicationCriticalpatent/FR858640A/fr
H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
H04R11/00—Transducers of moving-armature or moving-core type
H04R11/08—Gramophone pick-ups using a stylus; Recorders using a stylus
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Physics & Mathematics
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Electromagnetism
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Engineering & Computer Science
(AREA)
Acoustics & Sound
(AREA)
Signal Processing
(AREA)
FR858640D1939-08-031939-08-03Perfectionnements aux têtes d'enregistrement pour dispositifs d'enregistrement et de reproduction du son
ExpiredFR858640A
(fr)