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发明名称
Perfectionnements aux systèmes comparateurs de potentiels
摘要
申请公布号
FR998011(A)
申请公布日期
1952.01.14
申请号
FRD998011
申请日期
1949.09.23
申请人
LE MATERIEL TELEPHONIQUE
发明人
HENQUET ANDRE-JEAN;SALVADOR ODETTE-JULIE
分类号
H04Q1/18
主分类号
H04Q1/18
代理机构
代理人
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地址
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