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经营范围
发明名称
Perfectionnements aux systèmes de transmissions multiplex par impulsions électriques
摘要
申请公布号
FR1006312(A)
申请公布日期
1952.04.22
申请号
FRD1006312
申请日期
1947.12.18
申请人
发明人
LIBOIS LOUIS-JOSEPH
分类号
H04J3/00;H04J3/04
主分类号
H04J3/00
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代理人
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