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发明名称
Electronic tube
摘要
申请公布号
US2484194(A)
申请公布日期
1949.10.11
申请号
US19450585613
申请日期
1945.03.30
申请人
J. GREGORY POOLE
发明人
STEINHOFF JOHN R.
分类号
H01J21/08
主分类号
H01J21/08
代理机构
代理人
主权项
地址
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