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经营范围
发明名称
Underreamer
摘要
申请公布号
US3004615(A)
申请公布日期
1961.10.17
申请号
US19580716789
申请日期
1958.02.21
申请人
SCHUTTE MYLES H
发明人
SCHUTTE MYLES H.
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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