METHOD AND DEVICE FOR RELEASE OF STRING OF CASING SQUEEZED BY CAVED-IN ROCK MASS,申请号SU19884471114-传众专利搜索

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发明名称	METHOD AND DEVICE FOR RELEASE OF STRING OF CASING SQUEEZED BY CAVED-IN ROCK MASS
摘要
申请公布号	SU1689584(A1)	申请公布日期	1991.11.07
申请号	SU19884471114	申请日期	1988.04.11
申请人	MO I NEFTI GAZA IM.I.M.GUBKINA	发明人	AKOPOV EDUARD A,SU;DIFFINE EDUARD A,SU;CHERNOBYLSKIJ ANATOLIJ G,SU;LYUBAVIN ALEKSANDR V,SU;SAZONOV YURIJ A,SU
分类号	E21B31/00;E21B31/03	主分类号	E21B31/00
代理机构		代理人
主权项
地址

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