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发明名称
EXTRUSION PROCESS
摘要
申请公布号
GB1254641(A)
申请公布日期
1971.11.24
申请号
GB19690001845
申请日期
1969.01.13
申请人
ST. JOSEPH LEAD COMPANY
发明人
分类号
B21C23/32;B21C25/02
主分类号
B21C23/32
代理机构
代理人
主权项
地址
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