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发明名称
STEM SEALING DEVICE
摘要
申请公布号
JPH04220931(A)
申请公布日期
1992.08.11
申请号
JP19900404802
申请日期
1990.12.21
申请人
HITACHI LTD
发明人
SATO KIKUO
分类号
H01J9/34
主分类号
H01J9/34
代理机构
代理人
主权项
地址
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