VALVE MECHANISM FOR CONTROLLING A PRESSURE DIFFERENCE BETWEEN AN UPPER AND A LOWER CHAMBER OF A HYDRAULIC CYLINDER FOR A DIE CUSHION FOR A PRESS,申请号US19900592371-传众专利搜索

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发明名称	VALVE MECHANISM FOR CONTROLLING A PRESSURE DIFFERENCE BETWEEN AN UPPER AND A LOWER CHAMBER OF A HYDRAULIC CYLINDER FOR A DIE CUSHION FOR A PRESS
摘要
申请公布号	US5140895(A)	申请公布日期	1992.08.25
申请号	US19900592371	申请日期	1990.10.03
申请人	AIDA ENGINEERING CO., LTD.	发明人	IMANISHI, SHOZO
分类号	B30B15/02;B21D24/02	主分类号	B30B15/02
代理机构		代理人
主权项
地址

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