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发明名称
Perfectionnements aux systèmes téléphoniques
摘要
申请公布号
FR1509710(A)
申请公布日期
1968.01.12
申请号
FR19670093137
申请日期
1967.01.31
申请人
INTERNATIONAL STANDARD ELECTRIC CORPORATION
发明人
LOSCH PETER
分类号
H04Q3/00;H04Q5/06
主分类号
H04Q3/00
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代理人
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地址
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