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经营范围
发明名称
Extrusion apparatus
摘要
申请公布号
US1841396(A)
申请公布日期
1932.01.19
申请号
US19310515505
申请日期
1931.02.13
申请人
ALUMINUM COMPANY
发明人
BENZ WILLIAM A.
分类号
B21C35/04
主分类号
B21C35/04
代理机构
代理人
主权项
地址
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