PATTERN FOR MAKING A SAND MOLD WITH A BACK DRAFT,申请号USD3552480-传众专利搜索

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发明名称	PATTERN FOR MAKING A SAND MOLD WITH A BACK DRAFT
摘要
申请公布号	US3552480(A)	申请公布日期	1971.01.05
申请号	USD3552480	申请日期	1968.07.12
申请人	CATERPILLAR TRACTOR CO.	发明人	GEORGE V. HARRIS
分类号	B22C7/00;B22C23/00;(IPC1-7):B22C7/00	主分类号	B22C7/00
代理机构		代理人
主权项
地址

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