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经营范围
发明名称
DRILLING BIT
摘要
申请公布号
RO92913(B1)
申请公布日期
1987.10.01
申请号
RO19860123503
申请日期
1986.05.29
申请人
INTREPRINDEREA "1 MAI"
发明人
NICULESCU ATANASE;RADULESCU ALEXANDRU;GRIGORESCU GABRIEL;GHENGHEA GHEORGHE;ENE DUMITRU;MOROIANU ALEXANDRU
分类号
E21B10/42
主分类号
E21B10/42
代理机构
代理人
主权项
地址
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