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经营范围
发明名称
Grid controlled tubes
摘要
申请公布号
US2837672(A)
申请公布日期
1958.06.03
申请号
US19530361738
申请日期
1953.06.15
申请人
PHILCO CORPORATION
发明人
SMALL THEODORE W.;COLE WILLIAM P.
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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