Core for metal casting molds,申请号US19280318708-传众专利搜索

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发明名称	Core for metal casting molds
摘要
申请公布号	US1812491(A)	申请公布日期	1931.06.30
申请号	US19280318708	申请日期	1928.11.12
申请人	GENERAL MOTORS RESEARCH CORPORATION	发明人	LEE CHARLES L.;DEGRIFT THOMAS C. VAN
分类号	B22C9/10;B22D15/02	主分类号	B22C9/10
代理机构		代理人
主权项
地址

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