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摘要
申请公布号
NO123423(B)
申请公布日期
1971.11.15
申请号
NO19620143856
申请日期
1962.03.29
申请人
AVESTA JERNVERKS AB
发明人
JOHANSSON J
分类号
B21D51/24;B23K9/00;C21D7/12;F16L3/217
主分类号
B21D51/24
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