WORKING ROOF DEFORMATION SIGNALLING DEVICE,申请号SU19904832181-传众专利搜索

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发明名称	WORKING ROOF DEFORMATION SIGNALLING DEVICE
摘要
申请公布号	SU1737115(A1)	申请公布日期	1992.05.30
申请号	SU19904832181	申请日期	1990.05.30
申请人	INST GEOTEKHNICHESKOI MEKHANI	发明人	USACHENKO BORIS M,SU;SERGIENKO VIKTOR N,SU;SELEZNEV ANATOLIJ M,SU;VASILEV BORIS V,SU;KOSARYGIN YURIJ A,SU
分类号	E21C39/00	主分类号	E21C39/00
代理机构		代理人
主权项
地址

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