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发明名称
Oxydkathode, deren Oxydschicht mit kleinen Mengen metallischen Tantals in Beruehrung steht
摘要
申请公布号
DE747340(C)
申请公布日期
1952.12.22
申请号
DE1938S131478D
申请日期
1938.03.30
申请人
SIEMENS & HALSKE A.G.
发明人
KOLLIGS DR. PHIL. HANS
分类号
H01J1/14
主分类号
H01J1/14
代理机构
代理人
主权项
地址
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