Improvements in or relating to step ladders,申请号GB19530021186-传众专利搜索

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发明名称	Improvements in or relating to step ladders
摘要
申请公布号	GB744549(A)	申请公布日期	1956.02.08
申请号	GB19530021186	申请日期	1953.07.30
申请人	STEPHEN SHAPLAND ABBOTT	发明人
分类号	E06C1/16	主分类号	E06C1/16
代理机构		代理人
主权项
地址

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