DOUBLE REFRACTION DIFFRACTION GRATING TYPE POLARIZER AND OPTICAL HEAD DEVICE,申请号JP19930227379-传众专利搜索

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发明名称	DOUBLE REFRACTION DIFFRACTION GRATING TYPE POLARIZER AND OPTICAL HEAD DEVICE
摘要
申请公布号	JPH06308309(A)	申请公布日期	1994.11.04
申请号	JP19930227379	申请日期	1993.09.13
申请人	NEC CORP	发明人	OBA AKITOMO
分类号	G02B5/18;G02B5/30;G02B5/32;G06K7/10;G11B7/135;(IPC1-7):G02B5/18	主分类号	G02B5/18
代理机构		代理人
主权项
地址

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