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RODRIGUES GAUTHIER ET CIE
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RODRIGUES GAUTHIER ET CIE
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Application filed by RODRIGUES GAUTHIER ET CIEfiledCriticalRODRIGUES GAUTHIER ET CIE
Application grantedgrantedCritical
Publication of FR428509ApublicationCriticalpatent/FR428509A/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
G10K7/00—Sirens
G10K7/02—Sirens in which the sound-producing member is rotated manually or by a motor
G10K7/04—Sirens in which the sound-producing member is rotated manually or by a motor by an electric motor
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Physics & Mathematics
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Engineering & Computer Science
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Acoustics & Sound
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FR428509D1911-04-151911-04-15
Improvements to electric sirens
ExpiredFR428509A
(en)