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Submarine Signal Co
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Submarine Signal Co
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Publication date
Application filed by Submarine Signal CofiledCriticalSubmarine Signal Co
Application grantedgrantedCritical
Publication of FR923088ApublicationCriticalpatent/FR923088A/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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Physics & Mathematics
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Engineering & Computer Science
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Acoustics & Sound
(AREA)
Multimedia
(AREA)
FR923088D1945-03-101946-03-02
Improvements to sound producing and receiving devices
ExpiredFR923088A
(en)