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经营范围
发明名称
Cathode alloy
摘要
申请公布号
US2223862(A)
申请公布日期
1940.12.03
申请号
US19390302228
申请日期
1939.10.31
申请人
RADIO CORPORATION
发明人
WIDELL EMIL GIDEON
分类号
C22C19/00
主分类号
C22C19/00
代理机构
代理人
主权项
地址
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