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发明名称
EARTH-BORING MOTOR RIG FOR DEVELOPING FOR GEOTECHNICAL PURPOSES
摘要
申请公布号
HU903840(D0)
申请公布日期
1990.11.28
申请号
HU19900003840
申请日期
1990.06.14
申请人
PAPP,ZOLTAN,HU;PAPP,GEZA,HU
发明人
PAPP,ZOLTAN,HU;PAPP,GEZA,HU
分类号
E21B3/00;E21B7/00
主分类号
E21B3/00
代理机构
代理人
主权项
地址
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