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发明名称
DOWNHOLE PNEUMATIC HAMMER
摘要
申请公布号
RU1797650(C)
申请公布日期
1993.02.23
申请号
SU19914922632
申请日期
1991.03.28
申请人
INST GORNOGO DELA SO AN SSSR;PROIZV GEOLOGICHESKOE OB "SOSNOVGEOLOGIYA"
发明人
LIPIN ANATOLIJ A,SU;KOSTIN YURIJ S,SU;FEDOROV VIKTOR V,SU
分类号
E21B4/14
主分类号
E21B4/14
代理机构
代理人
主权项
地址
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