PERCUSSIVE RIPPER FOR MINING ROCKS,申请号PL19770195250-传众专利搜索

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发明名称	PERCUSSIVE RIPPER FOR MINING ROCKS
摘要
申请公布号	PL109861(B1)	申请公布日期	1980.06.30
申请号	PL19770195250	申请日期	1977.01.10
申请人		发明人
分类号	E21C;E21C47/00;(IPC1-7):E21C47/00	主分类号	E21C
代理机构		代理人
主权项
地址

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