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发明名称
Die assembly for forming hollow metal articles
摘要
申请公布号
US2183702(A)
申请公布日期
1939.12.19
申请号
US19380244781
申请日期
1938.12.09
申请人
BERTIL WENDEL FRANS
发明人
WENDEL FRANS BERTIL
分类号
B21C37/28
主分类号
B21C37/28
代理机构
代理人
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地址
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