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发明名称
摘要
申请公布号
JPH0420751(U)
申请公布日期
1992.02.21
申请号
JP19900062927U
申请日期
1990.06.14
申请人
发明人
分类号
H04M3/42;H04Q3/58;(IPC1-7):H04M3/42
主分类号
H04M3/42
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