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发明名称
ELECTROMAGNETIC BUZZER
摘要
申请公布号
SG26985(G)
申请公布日期
1990.07.06
申请号
SG19850000269
申请日期
1985.04.10
申请人
SEIKO INSTRUMENTS INC.
发明人
分类号
G10K9/18;G10K9/12;G10K9/13;(IPC1-7):G10K9/13;G04C21/34
主分类号
G10K9/18
代理机构
代理人
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