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发明名称
摘要
申请公布号
JPS57500486(A)
申请公布日期
1982.03.18
申请号
JP19810501670
申请日期
1981.04.10
申请人
发明人
分类号
G03B1/12;G03B1/60;G03B7/24;G03B17/00;G03B17/36;G03B17/42
主分类号
G03B1/12
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