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发明名称
Method of expanding tubing by freezing liquid therein
摘要
申请公布号
US2458189(A)
申请公布日期
1949.01.04
申请号
US19450605698
申请日期
1945.07.18
申请人
WARREN WEBSTER & COMPANY
发明人
MORGAN DAVID E.
分类号
B21C37/24;B21D26/02
主分类号
B21C37/24
代理机构
代理人
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地址
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