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发明名称
摘要
申请公布号
JP2787225(B2)
申请公布日期
1998.08.13
申请号
JP19890131243
申请日期
1989.05.24
申请人
SEIKO GIKEN KK
发明人
TAKAHASHI MITSUO
分类号
G02B6/36;G02B6/38;(IPC1-7):G02B6/38
主分类号
G02B6/36
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