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Ronag A G
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Ronag A G
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Application filed by Ronag A GfiledCriticalRonag A G
Application grantedgrantedCritical
Publication of FR811186ApublicationCriticalpatent/FR811186A/fr
G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
G10K13/00—Cones, diaphragms, or the like, for emitting or receiving sound in general
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Physics & Mathematics
(AREA)
Engineering & Computer Science
(AREA)
Acoustics & Sound
(AREA)
Multimedia
(AREA)
FR811186D1935-12-131936-07-31Dispositif pour l'enregistrement d'oscillations acoustiques
ExpiredFR811186A
(fr)