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发明名称
COMPOSITION AND METHOD FOR INSULATION OF CRACKS AND CAVITIES BJ DRILLING
摘要
申请公布号
BG31321(A1)
申请公布日期
1981.12.15
申请号
BG19800048855
申请日期
1980.08.15
申请人
NIKOV,IVAN T.;ABADZHIEV,IVAN P.;RUSEV,STEFAN A.;TRNDEV, DOBRI I.
发明人
NIKOV,IVAN T.;ABADZHIEV,IVAN P.;RUSEV,STEFAN A.;TRNDEV, DOBRI I.
分类号
E21B33/10;(IPC1-7):E21B33/10
主分类号
E21B33/10
代理机构
代理人
主权项
地址
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