INFORMATION RETRIEVAL SYSTEM WITH EXPANDED LOGIC CAPABILITY,申请号GB19770032561-传众专利搜索

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发明名称	INFORMATION RETRIEVAL SYSTEM WITH EXPANDED LOGIC CAPABILITY
摘要
申请公布号	GB1592412(A)	申请公布日期	1981.07.08
申请号	GB19770032561	申请日期	1977.08.03
申请人	BELL & HOWELL CO	发明人
分类号	G06K17/00;(IPC1-7):G11B15/18	主分类号	G06K17/00
代理机构		代理人
主权项
地址

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