APPARATUS FOR GUIDING A MEASURING INSTRUMENT WITHIN A RISER IN PAR TICULAR THAT FOR FILLING MATERIAL INSTALLED IN A MINE SHAFT,申请号PL19850255314-传众专利搜索

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发明名称	APPARATUS FOR GUIDING A MEASURING INSTRUMENT WITHIN A RISER IN PAR TICULAR THAT FOR FILLING MATERIAL INSTALLED IN A MINE SHAFT
摘要
申请公布号	PL149485(B1)	申请公布日期	1990.02.28
申请号	PL19850255314	申请日期	1985.09.09
申请人		发明人
分类号	E21F;E21F17/00;G01B;G01B5/12;(IPC1-7):G01B5/12	主分类号	E21F
代理机构		代理人
主权项
地址

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