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发明名称
Ударно-вращательный колонковый турбобур
摘要
申请公布号
SU111828(A1)
申请公布日期
1957.11.30
申请号
SU19550575962
申请日期
1955.12.14
申请人
GUZEEV A.A.
发明人
GUZEEV A.A.
分类号
E21B4/16
主分类号
E21B4/16
代理机构
代理人
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地址
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