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经营范围
发明名称
Amplificateur électrique
摘要
申请公布号
FR830185(A)
申请公布日期
1938.07.22
申请号
FRD830185
申请日期
1937.11.30
申请人
THE GENERAL ELECTRIC COMPANY LIMITED
发明人
分类号
H01J43/30
主分类号
H01J43/30
代理机构
代理人
主权项
地址
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