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经营范围
发明名称
METHOD AND APPARATUS FOR CLEANING DRIVEN WELLS
摘要
申请公布号
HUT57869(A)
申请公布日期
1991.12.30
申请号
HU19890000654
申请日期
1989.02.14
申请人
FARKAS,ISTVAN,HU;FURAK,ANDRAS,HU
发明人
FARKAS,ISTVAN,HU;FURAK,ANDRAS,HU
分类号
E21B21/00;(IPC1-7):E21B21/00
主分类号
E21B21/00
代理机构
代理人
主权项
地址
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