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经营范围
发明名称
Extrusion of metal pipes and the like
摘要
申请公布号
US1895881(A)
申请公布日期
1933.01.31
申请号
US19310547370
申请日期
1931.06.27
申请人
W. T. HENLEY'S TELEGRAPH WORKS COMPANY LIMITED
发明人
DUNSHEATH PERCY
分类号
B21C23/30
主分类号
B21C23/30
代理机构
代理人
主权项
地址
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