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经营范围
发明名称
Expandable mandrel for hollow piles
摘要
申请公布号
US3220195(A)
申请公布日期
1965.11.30
申请号
US19630292052
申请日期
1963.07.01
申请人
BARCUS LAWRENCE G;BARCUS WILLIAM R
发明人
BARCUS LAWRENCE G.;BARCUS WILLIAM R.
分类号
E02D7/30
主分类号
E02D7/30
代理机构
代理人
主权项
地址
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