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发明名称	ZOOM LENS FOR PROJECTOR
摘要
申请公布号	JPH1020192(A)	申请公布日期	1998.01.23
申请号	JP19960179561	申请日期	1996.07.09
申请人	RICOH OPT IND CO LTD	发明人	KONO YOSHITSUGU
分类号	G02B13/24;G02B15/167;(IPC1-7):G02B15/167	主分类号	G02B13/24
代理机构		代理人
主权项
地址

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