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经营范围
发明名称
Machine for rotary drilling
摘要
申请公布号
US3131776(A)
申请公布日期
1964.05.05
申请号
US19590854942
申请日期
1959.11.23
申请人
ATLAS COPCO AKTIEBOLAG
发明人
KVELLO-AUNE ALF GUNNAR;TROFTEN PER FREDRIK
分类号
E21B19/08
主分类号
E21B19/08
代理机构
代理人
主权项
地址
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