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发明名称
摘要
申请公布号
JPS5222195(Y1)
申请公布日期
1977.05.21
申请号
JP19690038588U
申请日期
1969.04.22
申请人
发明人
分类号
H01J37/063;H01J37/06;(IPC1-7):H01J37/06
主分类号
H01J37/063
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