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发明名称
Portable apparatus for supporting off shore drilling equipment
摘要
申请公布号
US2930200(A)
申请公布日期
1960.03.29
申请号
US19550552500
申请日期
1955.12.12
申请人
BEULAH PERKINS
发明人
PERKINS STARLING
分类号
E02B17/08
主分类号
E02B17/08
代理机构
代理人
主权项
地址
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