ROCK-DRILLING DEVICE,申请号JP19900089274-传众专利搜索

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发明名称	ROCK-DRILLING DEVICE
摘要
申请公布号	JPH02285195(A)	申请公布日期	1990.11.22
申请号	JP19900089274	申请日期	1990.04.05
申请人	TAMPELLA AB:OY	发明人	RAUNO RAYAARA
分类号	E21B19/08;E21B7/02;E21B15/00;E21B15/04;E21D9/10	主分类号	E21B19/08
代理机构		代理人
主权项
地址

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