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经营范围
发明名称
A RECIPROCABLE IMPACT HAMMER
摘要
申请公布号
CA2564935(A1)
申请公布日期
2005.11.24
申请号
CA20042564935
申请日期
2004.08.10
申请人
VARCO I/P, INC.
发明人
MARSH, BRENT
分类号
E21B4/16;E21B4/14
主分类号
E21B4/16
代理机构
代理人
主权项
地址
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