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经营范围
发明名称
Elektronenröhre.
摘要
申请公布号
CH274075(A)
申请公布日期
1951.03.15
申请号
CHD274075
申请日期
1946.12.03
申请人
INTERNATIONAL GENERAL ELECTRIC COMPANY, INC.
发明人
INC. INTERNATIONAL GENERAL ELECTRIC COMPANY,
分类号
H01J21/18
主分类号
H01J21/18
代理机构
代理人
主权项
地址
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