Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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GIRARD RENE FR
Original Assignee
GIRARD RENE FR
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Application filed by GIRARD RENE FRfiledCriticalGIRARD RENE FR
Priority to FR7225666ApriorityCriticalpatent/FR2178498A7/fr
Application grantedgrantedCritical
Publication of FR2178498A7publicationCriticalpatent/FR2178498A7/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
G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
G10K11/002—Devices for damping, suppressing, obstructing or conducting sound in acoustic devices