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发明名称
DOCUMENT RETRIEVAL SYSTEM
摘要
申请公布号
JPH03184170(A)
申请公布日期
1991.08.12
申请号
JP19890321400
申请日期
1989.12.13
申请人
HITACHI LTD
发明人
KAMATA YOSHIHIRO
分类号
G06F17/30
主分类号
G06F17/30
代理机构
代理人
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