METHOD OF DUST SUPPRESSION WHILE DRILLING,申请号SU19874189562-传众专利搜索

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发明名称	METHOD OF DUST SUPPRESSION WHILE DRILLING
摘要
申请公布号	SU1509525(A1)	申请公布日期	1989.09.23
申请号	SU19874189562	申请日期	1987.02.04
申请人	INST GEOTEKHNICHESKOI MEKHANI	发明人	GUSAK STANISLAV I,SU;SLAVIN IGOR G,SU
分类号	E21B21/16	主分类号	E21B21/16
代理机构		代理人
主权项
地址

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