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发明名称
Method of making wrought iron pipe
摘要
申请公布号
US2004138(A)
申请公布日期
1935.06.11
申请号
US19320645088
申请日期
1932.11.30
申请人
A. M. BYERS COMPANY
发明人
STORY EDWARD B.;GROSS CHARLES E.
分类号
B21C37/28
主分类号
B21C37/28
代理机构
代理人
主权项
地址
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