DUST BLASTING APPARATUS FOR ROCK DRILL,申请号JP19800071161-传众专利搜索

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发明名称	DUST BLASTING APPARATUS FOR ROCK DRILL
摘要
申请公布号	JPS56167095(A)	申请公布日期	1981.12.22
申请号	JP19800071161	申请日期	1980.05.27
申请人	YANO HISASHI	发明人	YANO HISASHI
分类号	E21B21/00	主分类号	E21B21/00
代理机构		代理人
主权项
地址

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