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发明名称
Method for cleaning and coating the interior of wells
摘要
申请公布号
US2717038(A)
申请公布日期
1955.09.06
申请号
US19530335857
申请日期
1953.02.09
申请人
PIPELIFE, INC.
发明人
CURTIS ARVEL C.
分类号
E21B17/00;E21B37/00
主分类号
E21B17/00
代理机构
代理人
主权项
地址
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