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发明名称
摘要
申请公布号
JPH0325993(U)
申请公布日期
1991.03.18
申请号
JP19890083079U
申请日期
1989.07.17
申请人
发明人
分类号
G08B25/08;H04M3/42;(IPC1-7):G08B25/08
主分类号
G08B25/08
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代理人
主权项
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