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发明名称
OPTICAL HEAD STRUCTURE
摘要
申请公布号
JPH01173327(A)
申请公布日期
1989.07.10
申请号
JP19870331495
申请日期
1987.12.26
申请人
NHK SPRING CO LTD
发明人
NISHIKUMA HIROAKI;HOSHINO SHUICHI
分类号
G11B7/09
主分类号
G11B7/09
代理机构
代理人
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