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发明名称
EXTRUSION
摘要
申请公布号
US3478561(A)
申请公布日期
1969.11.18
申请号
USD3478561
申请日期
1966.10.21
申请人
DAVY & UNITED ENG. CO. LTD.
发明人
HERBERT JOHN SAMUEL
分类号
B21C33/00;(IPC1-7):B21C23/00
主分类号
B21C33/00
代理机构
代理人
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地址
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