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发明名称
摘要
申请公布号
FR2309101(B1)
申请公布日期
1981.10.09
申请号
FR19750012499
申请日期
1975.04.22
申请人
LABO CENTRAL TELECOMMUNICATIONS
发明人
分类号
H04Q1/39;(IPC1-7):H04Q1/30
主分类号
H04Q1/39
代理机构
代理人
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