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发明名称
A SLIP ASSEMBLY IN A WELL PACKER HAVING INITIALLY RETRACTED PACKING SURROUNDING A MANDREL
摘要
申请公布号
GB1221746(A)
申请公布日期
1971.02.10
申请号
GB19690015678
申请日期
1968.06.13
申请人
CAMCO, INCORPORATED
发明人
分类号
E21B33/129;E21B33/1295
主分类号
E21B33/129
代理机构
代理人
主权项
地址
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