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GENERALE des Ets PATHE FRERES PHONOGRAPHE ET CINEMATOGRAPHE Cie
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GENERALE des Ets PATHE FRERES PHONOGRAPHE ET CINEMATOGRAPHE Cie
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Application filed by GENERALE des Ets PATHE FRERES PHONOGRAPHE ET CINEMATOGRAPHE CiefiledCriticalGENERALE des Ets PATHE FRERES PHONOGRAPHE ET CINEMATOGRAPHE Cie
Application grantedgrantedCritical
Publication of FR461850ApublicationCriticalpatent/FR461850A/en
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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FR461850D1912-11-071912-11-07
Improvements in amplifier pavilions
ExpiredFR461850A
(en)