IMPROVEMENTS IN OR RELATING TO ROCK DRILLS,申请号ZA19740005550-传众专利搜索

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发明名称	IMPROVEMENTS IN OR RELATING TO ROCK DRILLS
摘要
申请公布号	ZA7405550(B)	申请公布日期	1975.12.31
申请号	ZA19740005550	申请日期	1974.08.30
申请人	DELFOS & ATLAS COPCO LTD	发明人	HERRON L
分类号	E21C	主分类号	E21C
代理机构		代理人
主权项
地址

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