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发明名称
摘要
申请公布号
JPS63165630(U)
申请公布日期
1988.10.28
申请号
JP19870059798U
申请日期
1987.04.20
申请人
发明人
分类号
G03B13/06;G03B13/12;(IPC1-7):G03B13/06
主分类号
G03B13/06
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