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发明名称
Alloy for vacuum tube elements
摘要
申请公布号
US2103267(A)
申请公布日期
1937.12.28
申请号
US19260149801
申请日期
1926.11.20
申请人
RADIO CORPORATION
发明人
MANDEL EDWARD
分类号
H01J1/14
主分类号
H01J1/14
代理机构
代理人
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