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发明名称
КЛАПАН-БАШМАК
摘要
申请公布号
RU22175(U1)
申请公布日期
2002.03.10
申请号
RU20010123855U
申请日期
2001.08.27
申请人
Открытое акционерное общество "Научно-производственное объединение "Бурение"
发明人
Мильштейн В.М.;Мразевский М.П.;Коваленко С.В.
分类号
E21B17/14;E21B34/10
主分类号
E21B17/14
代理机构
代理人
主权项
地址
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