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发明名称
摘要
申请公布号
DE2007190(B)
申请公布日期
1971.06.24
申请号
DE19702007190
申请日期
1970.02.17
申请人
发明人
分类号
B23K20/12;F16D67/02
主分类号
B23K20/12
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