Improvements in or relating to support units for ladders used on uneven or sloping ground,申请号GB19480016660-传众专利搜索

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发明名称	Improvements in or relating to support units for ladders used on uneven or sloping ground
摘要
申请公布号	GB655493(A)	申请公布日期	1951.07.25
申请号	GB19480016660	申请日期	1948.06.21
申请人	JOHN GEORGE HANINGTON	发明人
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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