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发明名称
Header for electron tubes and the like and method of manufacture
摘要
申请公布号
US2426990(A)
申请公布日期
1947.09.09
申请号
US19430501048
申请日期
1943.09.03
申请人
SYLVANIA ELECTRIC PRODUCTS INC.
发明人
ELLEFSON BENNETT S.
分类号
H01J9/32
主分类号
H01J9/32
代理机构
代理人
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地址
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