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经营范围
发明名称
Elektronenröhre.
摘要
申请公布号
CH267211(A)
申请公布日期
1950.03.15
申请号
CHD267211
申请日期
1947.12.02
申请人
INTERNATIONAL GENERAL ELECTRIC COMPANY, INC.
发明人
INC. INTERNATIONAL GENERAL ELECTRIC COMPANY,
分类号
H01J21/36
主分类号
H01J21/36
代理机构
代理人
主权项
地址
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