METHOD FOR SEALING WELL HEAD IN CASE OF GAS AND WATER INGRESS,申请号SU19894660715-传众专利搜索

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发明名称	METHOD FOR SEALING WELL HEAD IN CASE OF GAS AND WATER INGRESS
摘要
申请公布号	SU1634777(A1)	申请公布日期	1991.03.15
申请号	SU19894660715	申请日期	1989.03.10
申请人	KURTOV VENIAMIN D,SU;KUTEPOV ALEKSEJ,SU;KOBRINETS ZHORZH V,SU	发明人	KURTOV VENIAMIN D,SU;KUTEPOV ALEKSEJ I,SU;KOBRINETS ZHORZH V,SU
分类号	E21B33/03	主分类号	E21B33/03
代理机构		代理人
主权项
地址

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