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发明名称
High pressure casing packer
摘要
申请公布号
US2729293(A)
申请公布日期
1956.01.03
申请号
US19530369645
申请日期
1953.07.22
申请人
CLOUD PACKER & TOOL, INC.
发明人
CLOUD ROBERT E.
分类号
E21B33/12
主分类号
E21B33/12
代理机构
代理人
主权项
地址
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