Method of making a sand retaining blow tube,申请号US19630299753-传众专利搜索

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发明名称	Method of making a sand retaining blow tube
摘要
申请公布号	US3200479(A)	申请公布日期	1965.08.17
申请号	US19630299753	申请日期	1963.08.05
申请人	PETERSON EDWIN F	发明人	PETERSON EDWIN F.
分类号	B22C15/24	主分类号	B22C15/24
代理机构		代理人
主权项
地址

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