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发明名称
摘要
申请公布号
BE742668(A)
申请公布日期
1970.05.14
申请号
BED742668
申请日期
1969.12.04
申请人
发明人
分类号
B21B27/00;B21B28/02;B23H9/04
主分类号
B21B27/00
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代理人
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地址
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