Improvements in stair treads,申请号GB19520017116-传众专利搜索

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发明名称	Improvements in stair treads
摘要
申请公布号	GB711106(A)	申请公布日期	1954.06.23
申请号	GB19520017116	申请日期	1952.07.08
申请人	SMALL & PARKES LIMITED	发明人	REDFARN CYRIL AUBREY
分类号	E04F11/16	主分类号	E04F11/16
代理机构		代理人
主权项
地址

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