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发明名称
摘要
申请公布号
DE2045171(A1)
申请公布日期
1971.04.01
申请号
DE19702045171
申请日期
1970.09.12
申请人
INT STANDARD ELECTRIC CORP
发明人
分类号
H04Q3/54;(IPC1-7):H04Q3/54
主分类号
H04Q3/54
代理机构
代理人
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