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经营范围
发明名称
WELL PACKER WITH SLIP AND DRAG BLOCK ASSEMBLY
摘要
申请公布号
US3520361(A)
申请公布日期
1970.07.14
申请号
USD3520361
申请日期
1969.01.22
申请人
KIVA CORP.
发明人
WILLIAM R. LEWIS
分类号
E21B33/129;(IPC1-7):E21B33/12
主分类号
E21B33/129
代理机构
代理人
主权项
地址
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