Improvements relating to nut tightening or loosening adaptors for coal or stone drills,申请号GB19550019948-传众专利搜索

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发明名称	Improvements relating to nut tightening or loosening adaptors for coal or stone drills
摘要
申请公布号	GB827591(A)	申请公布日期	1960.02.10
申请号	GB19550019948	申请日期	1955.07.11
申请人	MASTABAR MINING EQUIPMENT COMPANY LIMITED	发明人	WOOD JOHN CLEGHORN;TEBB BERNARD;HAINSWORTH SIDNEY BEETHAM
分类号	E21D21/00	主分类号	E21D21/00
代理机构		代理人
主权项
地址

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