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发明名称
METHOD OF FABRICATING DUCTING
摘要
申请公布号
GB1539747(A)
申请公布日期
1979.01.31
申请号
GB19760053474
申请日期
1976.12.22
申请人
VAN DEN BRINK W
发明人
分类号
B21C37/10;B21C37/15;B21D39/02;B21D39/04;(IPC1-7):B21D39/02
主分类号
B21C37/10
代理机构
代理人
主权项
地址
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