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发明名称
Art of bending and ejecting bent pipes
摘要
申请公布号
US2871908(A)
申请公布日期
1959.02.03
申请号
US19560625289
申请日期
1956.11.30
申请人
BLACKHAWK MFG. CO.
发明人
FLESSATE CLARENCE L.
分类号
B21D7/06
主分类号
B21D7/06
代理机构
代理人
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地址
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