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发明名称
摘要
申请公布号
JPH063721(B2)
申请公布日期
1994.01.12
申请号
JP19850103743
申请日期
1985.05.17
申请人
HITACHI LTD
发明人
KANDA KIMIO
分类号
H01J37/20;(IPC1-7):H01J37/20
主分类号
H01J37/20
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