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发明名称
Power plant foundation
摘要
申请公布号
US2296184(A)
申请公布日期
1942.09.15
申请号
US19390288703
申请日期
1939.08.07
申请人
JOHN RIISE
发明人
RIISE JOHN
分类号
E21B15/00;F16M3/00
主分类号
E21B15/00
代理机构
代理人
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