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发明名称
MANUFACTURE OF ELECTRON TUBE CATHODE
摘要
申请公布号
JPH02216729(A)
申请公布日期
1990.08.29
申请号
JP19890036202
申请日期
1989.02.17
申请人
HITACHI LTD;HITACHI OOTAKI DENSHI KK
发明人
HIRAKAWA MASAYUKI;KOIZUMI YUKIO
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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