Combined chair and ladder,申请号US19460683043-传众专利搜索

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发明名称	Combined chair and ladder
摘要
申请公布号	US2505607(A)	申请公布日期	1950.04.25
申请号	US19460683043	申请日期	1946.07.12
申请人	JACOB M. LEHRFELD	发明人	EARLEY WALTER D.
分类号	A47C12/02	主分类号	A47C12/02
代理机构		代理人
主权项
地址

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