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发明名称
MANUFACTURE OF INDIRECTLY-HEATED CATHODE COMPOSITION
摘要
申请公布号
JPH0221534(A)
申请公布日期
1990.01.24
申请号
JP19880170925
申请日期
1988.07.11
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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