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经营范围
发明名称
Perfectionnements aux transformateurs de modulation
摘要
申请公布号
FR922130(A)
申请公布日期
1947.05.30
申请号
FRD922130
申请日期
1945.12.15
申请人
LE MATERIEL TELEPHONIQUE
发明人
VAUVRECY PIERRE
分类号
H01F19/00
主分类号
H01F19/00
代理机构
代理人
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