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发明名称
SAPA PENTRU FORAJUL GAURILOR CU DIAMETRU MARE
摘要
申请公布号
RO76375(A2)
申请公布日期
1981.06.22
申请号
RO19780093785
申请日期
1978.04.12
申请人
INSTITUTUL DE CERCETARE SI INGINERIE TEHNOLOGICA PENTRU UTILAJ PETROLIER SI MINIER,RO
发明人
RADULESCU,ALEXANDRU,RO;GRADISTEANU,DUMITRU I.,RO;MOHORA,ION,RO;MEREANU,NICOLAE V.,RO;IACOBESCU,CONSTANTIN,RO;RADULESCU,MIHAI,RO
分类号
E21B10/12;(IPC1-7):E21B10/12
主分类号
E21B10/12
代理机构
代理人
主权项
地址
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