HYDRAULICALLY DRIVEN IMPACT HAMMER; FLUID CUSHIONING OF HAMMERHEAD,申请号NZ19900247439-传众专利搜索

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发明名称	HYDRAULICALLY DRIVEN IMPACT HAMMER; FLUID CUSHIONING OF HAMMERHEAD
摘要
申请公布号	NZ247439(A)	申请公布日期	1993.06.25
申请号	NZ19900247439	申请日期	1990.12.17
申请人	ESCO CORP	发明人	OTTESTAD, JACK B
分类号	B25D9/12;B25D9/16;(IPC1-7):B25D9/12	主分类号	B25D9/12
代理机构		代理人
主权项
地址

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