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发明名称
摘要
申请公布号
DE2014707(A1)
申请公布日期
1971.10.21
申请号
DE19702014707
申请日期
1970.03.26
申请人
发明人
分类号
B21F33/00;B65G57/00
主分类号
B21F33/00
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