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发明名称
Perfectionnements aux réseaux de transmission d'ondes électriques
摘要
申请公布号
FR800997(A)
申请公布日期
1936.07.23
申请号
FRD800997
申请日期
1936.01.09
申请人
LE MATERIEL TELEPHONIQUE
发明人
分类号
H03H7/01;H03H7/075
主分类号
H03H7/01
代理机构
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