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经营范围
发明名称
Perfectionnement aux amplificateurs à gain variable
摘要
申请公布号
FR1178537(A)
申请公布日期
1959.05.12
申请号
FRD1178537
申请日期
1957.06.15
申请人
SOCIETE VIDEON
发明人
NISSEN
分类号
H03G1/04
主分类号
H03G1/04
代理机构
代理人
主权项
地址
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