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发明名称
Thermionic valve
摘要
申请公布号
US2217427(A)
申请公布日期
1940.10.08
申请号
US19380207757
申请日期
1938.05.13
申请人
C. LORENZ AKTIENGESELLSCHAFT
发明人
ZINKE ERHARD
分类号
H01J19/00
主分类号
H01J19/00
代理机构
代理人
主权项
地址
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