Automatic leveling ladder,申请号US19350006858-传众专利搜索

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发明名称	Automatic leveling ladder
摘要
申请公布号	US2109787(A)	申请公布日期	1938.03.01
申请号	US19350006858	申请日期	1935.02.16
申请人	WARREN WILLIAM A;BOWERS CLAUDE E	发明人	WARREN WILLIAM A.;BOWERS CLAUDE E.
分类号	E06C7/44	主分类号	E06C7/44
代理机构		代理人
主权项
地址

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