Improvements in ladders,申请号GB19470003394-传众专利搜索

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发明名称	Improvements in ladders
摘要
申请公布号	GB657746(A)	申请公布日期	1951.09.26
申请号	GB19470003394	申请日期	1947.02.05
申请人	JOHN KERR & COMPANY (MANCHESTER) LIMITED;HENRY GEORGE CLEMENTS	发明人
分类号	E06C7/08	主分类号	E06C7/08
代理机构		代理人
主权项
地址

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