DRILL RODS AND COUPLINGS THEREFOR,申请号CAD740338-传众专利搜索

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发明名称	DRILL RODS AND COUPLINGS THEREFOR
摘要
申请公布号	CA740338(A)	申请公布日期	1966.08.09
申请号	CAD740338	申请日期
申请人	DOMINION MAGNESIUM LIMITED	发明人	HAROLD G. WARRINGTON
分类号		主分类号
代理机构		代理人
主权项
地址

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