Spring and mattress construction,申请号US19300447845-传众专利搜索

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发明名称	Spring and mattress construction
摘要
申请公布号	US1903224(A)	申请公布日期	1933.03.28
申请号	US19300447845	申请日期	1930.04.28
申请人	OEHRL ERNEST A	发明人	OEHRL ERNEST A.
分类号	A47C23/043	主分类号	A47C23/043
代理机构		代理人
主权项
地址

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