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经营范围
发明名称
Elektronenroehrenverstaerker
摘要
申请公布号
DE594793(C)
申请公布日期
1934.03.22
申请号
DE1926I029127D
申请日期
1926.09.25
申请人
INTERNATIONAL GENERAL ELECTRIC COMPANY
发明人
分类号
G08C19/48
主分类号
G08C19/48
代理机构
代理人
主权项
地址
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