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发明名称
摘要
申请公布号
NL92335(C)
申请公布日期
1959.09.16
申请号
NL19540187089
申请日期
1954.04.26
申请人
发明人
分类号
B25D17/04;E21C37/24
主分类号
B25D17/04
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