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发明名称
Method and apparatus for bending pipe to short radh with minimum thinning of the outer wall thickness at the bend
摘要
申请公布号
US2996100(A)
申请公布日期
1961.08.15
申请号
US19570651448
申请日期
1957.04.08
申请人
DRAVO CORPORATION
发明人
NEWHALL WELROSE L.;JR. SAMUEL B. FLOYD,
分类号
B21D9/07
主分类号
B21D9/07
代理机构
代理人
主权项
地址
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