Universal folding ladder,申请号US19340714309-传众专利搜索

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发明名称	Universal folding ladder
摘要
申请公布号	US2024039(A)	申请公布日期	1935.12.10
申请号	US19340714309	申请日期	1934.03.06
申请人	WALTER HARTING	发明人	HARTING WALTER
分类号	E06C1/32;E06C1/39	主分类号	E06C1/32
代理机构		代理人
主权项
地址

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