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发明名称
Method of making tubular sheet material
摘要
申请公布号
US2190494(A)
申请公布日期
1940.02.13
申请号
US19370167124
申请日期
1937.10.04
申请人
ALUMINUM COMPANY OF AMERICA
发明人
TEMPLIN RICHARD L.
分类号
B21D53/04
主分类号
B21D53/04
代理机构
代理人
主权项
地址
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