APPARATUS FOR MAKING CAVITIES IN HOLES,申请号SU19894785029-传众专利搜索

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发明名称	APPARATUS FOR MAKING CAVITIES IN HOLES
摘要
申请公布号	SU1767146(A1)	申请公布日期	1992.10.07
申请号	SU19894785029	申请日期	1989.12.05
申请人	KHRIPKOV ALEKSANDR,SU;KHRIPKOVA TATYANA S,SU	发明人	KHRIPKOV ALEKSANDR I,SU;KHRIPKOVA TATYANA S,SU
分类号	E21B7/28	主分类号	E21B7/28
代理机构		代理人
主权项
地址

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