BREAKING OR CRACKING OF ROCK,申请号ZW19880000132-传众专利搜索

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发明名称	BREAKING OR CRACKING OF ROCK
摘要
申请公布号	ZW13288(A1)	申请公布日期	1989.06.07
申请号	ZW19880000132	申请日期	1988.10.03
申请人	AECI LIMITED	发明人	TREVOR HARRISON THOMPSON
分类号	E21C;(IPC1-7):E21C/	主分类号	E21C
代理机构		代理人
主权项
地址

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