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发明名称
Турбовибратор для колонкового бурения
摘要
申请公布号
SU113501(A1)
申请公布日期
1957.11.30
申请号
SU19550575523
申请日期
1955.06.29
申请人
IVANOV V.V.;FORMSKIJ S.A.
发明人
IVANOV V.V.;FORMSKIJ S.A.
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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