Process for the production of molding sand,申请号US19510211798-传众专利搜索

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发明名称	Process for the production of molding sand
摘要
申请公布号	US2694241(A)	申请公布日期	1954.11.16
申请号	US19510211798	申请日期	1951.02.19
申请人	HELLMUT FREUDENBERG	发明人	FREUDENBERG HELLMUT
分类号	B22C1/02	主分类号	B22C1/02
代理机构		代理人
主权项
地址

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