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发明名称
摘要
申请公布号
JPH04133212(U)
申请公布日期
1992.12.11
申请号
JP19910048996U
申请日期
1991.05.30
申请人
发明人
分类号
G02B6/00;G02B6/42;G11B33/06;(IPC1-7):G02B6/42
主分类号
G02B6/00
代理机构
代理人
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