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发明名称
Oxide-coated cathode and method of producing same
摘要
申请公布号
GB820187(A)
申请公布日期
1959.09.16
申请号
GB19570013098
申请日期
1957.04.24
申请人
EGYESULT IZZOLAMPA ES VILLAMOSSAGI RESZVENYTARSASAG
发明人
分类号
H01J9/04
主分类号
H01J9/04
代理机构
代理人
主权项
地址
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