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发明名称
摘要
申请公布号
JPS56128800(U)
申请公布日期
1981.09.30
申请号
JP19800026310U
申请日期
1980.02.29
申请人
发明人
分类号
H04H40/81;H04Q9/00;H04Q9/14;H04S1/00;(IPC1-7):H04S1/00;H04H5/00
主分类号
H04H40/81
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