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发明名称
TUBING PACKER
摘要
申请公布号
SG69493(G)
申请公布日期
1993.08.06
申请号
SG19930000694
申请日期
1993.05.28
申请人
COOPER INDUSTRIES INC.
发明人
分类号
E21B23/06;E21B33/128;E21B33/1295;E21B43/10;F16B7/04;F16J15/08;F16L13/14;(IPC1-7):E21B33/129;E21B23/04
主分类号
E21B23/06
代理机构
代理人
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地址
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