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经营范围
发明名称
SEALING PACKER
摘要
申请公布号
GB2192216(A)
申请公布日期
1988.01.06
申请号
GB19870011152
申请日期
1986.10.02
申请人
* ARROW OIL TOOLS INC
发明人
* CLIFTON TED G;* BROOKEY ROBERT L
分类号
E21B;E21B33/124;F16J15/02;F16J15/18;(IPC1-7):E21B33/124
主分类号
E21B
代理机构
代理人
主权项
地址
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