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发明名称
摘要
申请公布号
JPH01172038(U)
申请公布日期
1989.12.06
申请号
JP19880068078U
申请日期
1988.05.25
申请人
发明人
分类号
G03B27/34;G03G21/00;(IPC1-7):G03B27/34
主分类号
G03B27/34
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代理人
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