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发明名称
Braunsche Hochvakuumroehre, insbesondere fuer Messzwecke
摘要
申请公布号
DE902277(C)
申请公布日期
1954.01.21
申请号
DE1942S014804D
申请日期
1942.05.08
申请人
SIEMENS & HALSKE AKTIENGESELLSCHAFT
发明人
SIEBERTS DR. KARL
分类号
H01J29/74
主分类号
H01J29/74
代理机构
代理人
主权项
地址
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