EXPANDER DEVICE FOR MAKING HOLES IN GROUND BY COMPACTION,申请号GB19750023130-传众专利搜索

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发明名称	EXPANDER DEVICE FOR MAKING HOLES IN GROUND BY COMPACTION
摘要
申请公布号	GB1503689(A)	申请公布日期	1978.03.15
申请号	GB19750023130	申请日期	1975.05.27
申请人	INST GOR DELA SIBIR OTDELENIA AKAD NAUK	发明人
分类号	E21B7/26;(IPC1-7):E21B1/06	主分类号	E21B7/26
代理机构		代理人
主权项
地址

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