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经营范围
发明名称
SIGNAL DETECTING OPTICAL SYSTEM FOR OPTICAL HEAD
摘要
申请公布号
JPS6476427(A)
申请公布日期
1989.03.22
申请号
JP19870231799
申请日期
1987.09.16
申请人
ASAHI OPTICAL CO LTD
发明人
NISHIKAWA KOICHIRO
分类号
G11B7/09
主分类号
G11B7/09
代理机构
代理人
主权项
地址
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