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发明名称
摘要
申请公布号
JPS4929833(A)
申请公布日期
1974.03.16
申请号
JP19720070945
申请日期
1972.07.14
申请人
发明人
分类号
G03B21/11;G03D15/10
主分类号
G03B21/11
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