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发明名称
Nouveau modulateur
摘要
申请公布号
FR777943(A)
申请公布日期
1935.03.05
申请号
FRD777943
申请日期
1933.11.22
申请人
SOCIETE DES TELEPHONES GRAMMONT
发明人
分类号
H03C1/54;H03C1/58
主分类号
H03C1/54
代理机构
代理人
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地址
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