Improvements connected with ladders and the like,申请号GB19470012420-传众专利搜索

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发明名称	Improvements connected with ladders and the like
摘要
申请公布号	GB626550(A)	申请公布日期	1949.07.18
申请号	GB19470012420	申请日期	1947.05.08
申请人	CYRIL HARCOURT MATTHEWS	发明人
分类号	E06C1/22	主分类号	E06C1/22
代理机构		代理人
主权项
地址

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