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发明名称
Передвижной ударно-вращательный станок для бурения неглубоких скважин
摘要
申请公布号
SU68933(A1)
申请公布日期
1946.11.30
申请号
SU19450339398
申请日期
1945.07.21
申请人
PUCHKOV N.A.
发明人
PUCHKOV N.A.
分类号
E21B6/00;E21B21/00
主分类号
E21B6/00
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