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经营范围
发明名称
Elektrodenhalterung fuer Elektronenroehren
摘要
申请公布号
DE740488(C)
申请公布日期
1944.02.23
申请号
DE1938S132508D
申请日期
1938.06.11
申请人
SIEMENS & HALSKE AG.
发明人
KOSAK HANS
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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