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发明名称
Kathode fuer Elektronenroehren
摘要
申请公布号
DE899079(C)
申请公布日期
1953.12.07
申请号
DE1950S018796
申请日期
1950.08.26
申请人
SIEMENS & HALSKE AKTIENGESELLSCHAFT
发明人
GANSWINDT HARTMUT
分类号
H01J1/18
主分类号
H01J1/18
代理机构
代理人
主权项
地址
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