Improvements in or relating to step ladders,申请号GB19560014502-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	GB831332(A)	申请公布日期	1960.03.30
申请号	GB19560014502	申请日期	1956.05.10
申请人	CYRIL HARCOURT MATTHEWS	发明人
分类号	E06C1/393	主分类号	E06C1/393
代理机构		代理人
主权项
地址

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