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Signal GmbH
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Signal GmbH
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Application filed by Signal GmbHfiledCriticalSignal GmbH
Application grantedgrantedCritical
Publication of FR460582ApublicationCriticalpatent/FR460582A/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
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
(AREA)
Acoustics & Sound
(AREA)
Multimedia
(AREA)
FR460582D1912-07-291913-07-21Dispositif de mise en marche et d'arret de sirènes sous-marines
ExpiredFR460582A
(fr)