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经营范围
发明名称
Underreamer
摘要
申请公布号
US2401515(A)
申请公布日期
1946.06.04
申请号
US19440537296
申请日期
1944.05.25
申请人
SCHUTTE MYLES G;SCHUTTE NORMAN L
发明人
SCHUTTE MYLES G.;SCHUTTE NORMAN L.
分类号
E21B10/32
主分类号
E21B10/32
代理机构
代理人
主权项
地址
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