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发明名称
TELEPHONE SYSTEMS
摘要
申请公布号
GB1521216(A)
申请公布日期
1978.08.16
申请号
GB19760023501
申请日期
1976.06.07
申请人
ERICSSON TELEFONAB LM
发明人
分类号
H04M9/00;(IPC1-7):H04M13/00
主分类号
H04M9/00
代理机构
代理人
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