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发明名称
Elektrisches Vakuumgefaess, insbesondere Elektronenroehre
摘要
申请公布号
DE899238(C)
申请公布日期
1953.12.10
申请号
DE1944S014839D
申请日期
1944.08.30
申请人
SIEMENS & HALSKE AKTIENGESELLSCHAFT
发明人
SIEBERTZ DR. KARL
分类号
H01J5/20
主分类号
H01J5/20
代理机构
代理人
主权项
地址
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