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经营范围
发明名称
Клапанный гидравлический ударник
摘要
申请公布号
SU141457(A1)
申请公布日期
1960.11.30
申请号
SU19600677447
申请日期
1960.08.26
申请人
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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