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发明名称
Гидроударник для бурения скважин
摘要
申请公布号
SU126438(A1)
申请公布日期
1959.11.30
申请号
SU19580597594
申请日期
1958.04.17
申请人
VOSKRESENSKIJ F.F.
发明人
VOSKRESENSKIJ F.F.
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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