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发明名称
Dual stripper rubber cartridge with leak detection
摘要
申请公布号
GB2456890(B8)
申请公布日期
2013.04.24
申请号
GB20080022714
申请日期
2008.12.12
申请人
SMITH INTERNATIONAL, INC.
发明人
TRUNG LEDUC;RUSSELL LEWIS
分类号
E21B33/08;E21B33/068
主分类号
E21B33/08
代理机构
代理人
主权项
地址
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