Improvements relating to percussive rock drills,申请号GB19380036606-传众专利搜索

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发明名称	Improvements relating to percussive rock drills
摘要
申请公布号	GB522765(A)	申请公布日期	1940.06.26
申请号	GB19380036606	申请日期	1938.12.15
申请人	THE CLIMAX ROCK DRILL AND ENGINEERING WORKS LIMITED;RAYNAR DE HELE ST. STEPHENS	发明人
分类号	E21B21/01	主分类号	E21B21/01
代理机构		代理人
主权项
地址

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