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发明名称
Radio tube socket unit
摘要
申请公布号
US1973248(A)
申请公布日期
1934.09.11
申请号
US19330699796
申请日期
1933.11.25
申请人
EVANS SAMUEL H
发明人
EVANS SAMUEL H.
分类号
H01J5/12
主分类号
H01J5/12
代理机构
代理人
主权项
地址
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