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发明名称
DIGGING PROCESS FOR MINE WELL AND WATER WELL
摘要
申请公布号
RO108715(B1)
申请公布日期
1994.07.29
申请号
RO19910147953
申请日期
1991.07.05
申请人
IONESCU ION, BUCURESTI;IONESCU ATHENA ELECTRA, BUCURESTI
发明人
IONESCU ION;IONESCU ATHENA ELECTRA
分类号
E21B19/09;(IPC1-7):E21B19/09
主分类号
E21B19/09
代理机构
代理人
主权项
地址
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