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发明名称
Pipe-bending tool
摘要
申请公布号
US1752220(A)
申请公布日期
1930.03.25
申请号
US19290346388
申请日期
1929.03.12
申请人
ALLEN ANDREW B
发明人
ALLEN ANDREW B.
分类号
B21D7/06
主分类号
B21D7/06
代理机构
代理人
主权项
地址
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