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发明名称
DYNAMIC SEAL FOR WELL TOOLS
摘要
申请公布号
GB2145192(B)
申请公布日期
1986.10.22
申请号
GB19840020263
申请日期
1984.08.09
申请人
* BAKER OIL TOOLS INC
发明人
GERALD D * JACKSON
分类号
E21B34/00;E21B34/10;F16J15/16;(IPC1-7):F16J9/20
主分类号
E21B34/00
代理机构
代理人
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