DOWN-THE-HOLE HAMMER,申请号AU19770026161-传众专利搜索

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发明名称	DOWN-THE-HOLE HAMMER
摘要
申请公布号	AU506091(B2)	申请公布日期	1979.12.13
申请号	AU19770026161	申请日期	1977.06.16
申请人	KENNAMENTAL, INC.	发明人	J.F. KITA
分类号	E21B4/14;(IPC1-7):E21B1/06	主分类号	E21B4/14
代理机构		代理人
主权项
地址

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