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发明名称
摘要
申请公布号
JPS5472994(U)
申请公布日期
1979.05.24
申请号
JP19770130423U
申请日期
1977.09.28
申请人
发明人
分类号
G02B5/08;A47G1/00;A47G1/02;G02B5/00;(IPC1-7):A47G1/02
主分类号
G02B5/08
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