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发明名称
Pipe-bending machine
摘要
申请公布号
US2500980(A)
申请公布日期
1950.03.21
申请号
US19480060067
申请日期
1948.11.15
申请人
CRUTCHER-ROLFS-CUMMINGS COMPANY
发明人
CUMMINGS JAMES D.
分类号
B21D7/022
主分类号
B21D7/022
代理机构
代理人
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