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经营范围
发明名称
CASING HOLDER
摘要
申请公布号
JPS5433801(A)
申请公布日期
1979.03.12
申请号
JP19780068721
申请日期
1978.06.07
申请人
WEATHERFORD LAMB
发明人
SCHULZE-BECKINGHAUSEN JOERG
分类号
E21B3/04;E21B19/06;E21B19/16
主分类号
E21B3/04
代理机构
代理人
主权项
地址
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