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发明名称
Coffer-dam
摘要
申请公布号
US2931187(A)
申请公布日期
1960.04.05
申请号
US19570670512
申请日期
1957.07.08
申请人
STARLING PERKINS
发明人
PERKINS STARLING
分类号
E02D5/32;E02D19/04;E21D1/08;E21D1/14
主分类号
E02D5/32
代理机构
代理人
主权项
地址
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