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发明名称
Improvements relating to electron tubes
摘要
申请公布号
GB803665(A)
申请公布日期
1958.10.29
申请号
GB19550022148
申请日期
1955.08.02
申请人
EITEL-MCCULLOUGH, INC.
发明人
分类号
H01J19/46
主分类号
H01J19/46
代理机构
代理人
主权项
地址
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