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发明名称
Casing centralizer
摘要
申请公布号
US3072196(A)
申请公布日期
1963.01.08
申请号
US19600071952
申请日期
1960.11.28
申请人
WEATHERFORD OIL TOOL COMPANY, INC.
发明人
LOVE ADDISON N.
分类号
E21B17/10
主分类号
E21B17/10
代理机构
代理人
主权项
地址
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