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发明名称
Колонковый снаряд для герметизации керна
摘要
申请公布号
SU134232(A1)
申请公布日期
1960.11.30
申请号
SU19600666313
申请日期
1960.05.13
申请人
ATYAKIN A.K.
发明人
ATYAKIN A.K.
分类号
E21B25/08;E21B49/02;E21B49/08
主分类号
E21B25/08
代理机构
代理人
主权项
地址
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