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发明名称
摘要
申请公布号
JPS5647521(U)
申请公布日期
1981.04.27
申请号
JP19790128832U
申请日期
1979.09.18
申请人
发明人
分类号
G03B7/099;G03B7/0997
主分类号
G03B7/099
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代理人
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