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发明名称
Method and means for making tube bends
摘要
申请公布号
US1956604(A)
申请公布日期
1934.05.01
申请号
US19320587626
申请日期
1932.01.20
申请人
GENERAL FIRE EXTINGUISHER COMPANY
发明人
WILLIAMS JAMES HOWARD
分类号
B21D9/12
主分类号
B21D9/12
代理机构
代理人
主权项
地址
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