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经营范围
发明名称
Perfectionnements aux amplificateurs électriques
摘要
申请公布号
FR1126108(A)
申请公布日期
1956.11.15
申请号
FRD1126108
申请日期
1955.06.13
申请人
GENERAL MOTORS CORPORATION
发明人
分类号
H03F3/50
主分类号
H03F3/50
代理机构
代理人
主权项
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