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发明名称
ELECTROACOUSTIC DEVICE FOR AN ALARM WATCH
摘要
申请公布号
GB2036406(B)
申请公布日期
1983.01.19
申请号
GB19790036532
申请日期
1979.10.22
申请人
EBAUCHES SA
发明人
分类号
G04C21/02;G04C21/34;G10K9/12;G10K9/13;H04R11/00;(IPC1-7):G10K9/13
主分类号
G04C21/02
代理机构
代理人
主权项
地址
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