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发明名称
Electron tube
摘要
申请公布号
US2137609(A)
申请公布日期
1938.11.22
申请号
US19370131187
申请日期
1937.03.16
申请人
C. LORENZ AKTIENGESELLSCHAFT
发明人
GAEBEL ALFRED
分类号
H01J19/42
主分类号
H01J19/42
代理机构
代理人
主权项
地址
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