CPC Subgroup
G10K 7/02 in which the sound-producing member is rotated manually or by a motor (G10K7/06 takes precedence)
Full Title
Sirens > in which the sound-producing member is rotated manually or by a motor (G10K7/06 takes precedence)
1 direct subcode
Child Classifications
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- G10K 7/04 by an electric motor