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发明名称	LENS FOR READING
摘要
申请公布号	JPH04324810(A)	申请公布日期	1992.11.13
申请号	JP19910095613	申请日期	1991.04.25
申请人	RICOH OPT IND CO LTD	发明人	KONO YOSHITSUGU
分类号	G02B9/64;G02B13/24	主分类号	G02B9/64
代理机构		代理人
主权项
地址

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