A method of improving natural foundry sands,申请号GB19620032390-传众专利搜索

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发明名称	A method of improving natural foundry sands
摘要
申请公布号	GB982859(A)	申请公布日期	1965.02.10
申请号	GB19620032390	申请日期	1962.08.23
申请人	WILHELM PATTERSON;DIETMAR BOENISCH;ANNA - LUISE DORFELBRINKHOFF	发明人
分类号	B22C1/18	主分类号	B22C1/18
代理机构		代理人
主权项
地址

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