APPARATUS FOR EXTRACTING OBJECTS FROM LARGE-DIAMETER BOREHOLES,申请号SU19772488297-传众专利搜索

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发明名称	APPARATUS FOR EXTRACTING OBJECTS FROM LARGE-DIAMETER BOREHOLES
摘要
申请公布号	SU855187(A1)	申请公布日期	1981.08.15
申请号	SU19772488297	申请日期	1977.05.16
申请人	VNII BUROVOJ TEKHNIKI	发明人	VYSOTSKIJ VLADIMIR A,SU
分类号	E21B31/00;(IPC1-7):E21B31/00	主分类号	E21B31/00
代理机构		代理人
主权项
地址

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