OPTICAL PICKUP DEVICE OPTICAL PICKUP DEVICE,申请号EP19880311665-传众专利搜索

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发明名称	OPTICAL PICKUP DEVICE OPTICAL PICKUP DEVICE
摘要
申请公布号	EP0320276(A3)	申请公布日期	1990.06.06
申请号	EP19880311665	申请日期	1988.12.09
申请人	SHARP KABUSHIKI KAISHA	发明人	NAGAHAMA, TOSHIYA;KURATA, YUKIO;YOSHIDA, YOSHIO
分类号	G02B7/28;G11B7/09;G11B7/13;G11B7/135;(IPC1-7):G11B7/08	主分类号	G02B7/28
代理机构		代理人
主权项
地址

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