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发明名称
APPARATUS FOR DEWATERING AND INITIATING WELLS
摘要
申请公布号
SU881301(A1)
申请公布日期
1981.11.15
申请号
SU19782644863
申请日期
1978.07.14
申请人
PK KONTORA TRESTA "VOSTOKBURVOD" MINISTERSTVA MONTAZHNYKH SP STROITELNYKH RABOT SSSR
发明人
KOZHEMYACHENKO BORIS P,SU
分类号
E21B43/00;(IPC1-7):E21B43/00
主分类号
E21B43/00
代理机构
代理人
主权项
地址
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