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发明名称
Hochvakuum-Entladungsroehre
摘要
申请公布号
DE821090(C)
申请公布日期
1951.11.15
申请号
DE1948P010883
申请日期
1948.10.02
申请人
SIEMENS & HALSKE A. G.
发明人
KATZ HELMUT DR. PHIL.
分类号
H01J1/20;H01J21/02
主分类号
H01J1/20
代理机构
代理人
主权项
地址
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