Ladder,申请号US19320635958-传众专利搜索

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发明名称	Ladder
摘要
申请公布号	US1976345(A)	申请公布日期	1934.10.09
申请号	US19320635958	申请日期	1932.10.03
申请人	FRANK HRUBY	发明人	HRUBY FRANK
分类号	E06C1/20;E06C1/38;E06C7/48	主分类号	E06C1/20
代理机构		代理人
主权项
地址

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