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发明名称
An improved method of and means for expanding tubes
摘要
申请公布号
GB550051(A)
申请公布日期
1942.12.21
申请号
GB19410007657
申请日期
1941.06.17
申请人
BABCOCK & WILCOX LIMITED;CHRISTOPHER HUMPHREY DAVY
发明人
分类号
B21D39/20;F28F9/16
主分类号
B21D39/20
代理机构
代理人
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