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发明名称
EROSION PROTECTION FOR WELLS
摘要
申请公布号
US3470952(A)
申请公布日期
1969.10.07
申请号
USD3470952
申请日期
1968.02.08
申请人
MOBIL OIL CORP.
发明人
FLOYD E. BLOUNT
分类号
E21B41/00;E21B43/12;(IPC1-7):E21B17/10
主分类号
E21B41/00
代理机构
代理人
主权项
地址
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