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发明名称
Elektronenroehre
摘要
申请公布号
DE908889(C)
申请公布日期
1954.04.12
申请号
DE1939S014925D
申请日期
1939.03.14
申请人
SIEMENS & HALSKE AKTIENGESELLSCHAFT
发明人
HARNISCH DR. PHIL. MARTIN
分类号
H01J19/00
主分类号
H01J19/00
代理机构
代理人
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地址
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