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发明名称
Method of making hollow wrought metal articles
摘要
申请公布号
US2243809(A)
申请公布日期
1941.05.27
申请号
US19340746658
申请日期
1934.10.03
申请人
W. S. A., INCORPORATED
发明人
WENDEL FRANS B.
分类号
B21C37/29
主分类号
B21C37/29
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