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发明名称
Improvements in cathodes and method of making them
摘要
申请公布号
GB721837(A)
申请公布日期
1955.01.12
申请号
GB19520000483
申请日期
1952.01.07
申请人
EGYESULT IZZOLAMPA ES VILLAMOSSAGI RESZVENYTARSASAG
发明人
分类号
H01J1/28;H01J9/04
主分类号
H01J1/28
代理机构
代理人
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地址
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