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发明名称
摘要
申请公布号
JPS4811710(U)
申请公布日期
1973.02.09
申请号
JP19710053130U
申请日期
1971.06.18
申请人
发明人
分类号
H04M1/72;G08B5/22;G08B5/36;G08B7/00;H04M9/00;H04Q3/58;(IPC1-7):H04M9/00
主分类号
H04M1/72
代理机构
代理人
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地址
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