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发明名称
摘要
申请公布号
JPS5436423(U)
申请公布日期
1979.03.09
申请号
JP19770109154U
申请日期
1977.08.17
申请人
发明人
分类号
G03B13/24;G03B19/12;(IPC1-7):G03B13/24
主分类号
G03B13/24
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