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发明名称
摘要
申请公布号
JPS5645820(U)
申请公布日期
1981.04.24
申请号
JP19790127445U
申请日期
1979.09.14
申请人
发明人
分类号
G03B7/00;G03B15/05;G03B17/18;G03B17/20;H05B41/14;H05B41/30
主分类号
G03B7/00
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