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发明名称
Method for impregnating tungsten dispenser cathodes
摘要
申请公布号
US3320091(A)
申请公布日期
1967.05.16
申请号
US19630311174
申请日期
1963.09.24
申请人
SEMICON ASSOCIATES, INC.
发明人
KOPPIUS OTTO G.
分类号
B22F3/26;H01J9/04;H01K3/02
主分类号
B22F3/26
代理机构
代理人
主权项
地址
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