Improvements in or relating to signs,申请号GB19570011233-传众专利搜索

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发明名称	Improvements in or relating to signs
摘要
申请公布号	GB899121(A)	申请公布日期	1962.06.20
申请号	GB19570011233	申请日期	1957.04.05
申请人	HILLS (PATENTS) LIMITED;RALPH GORDON DODDS	发明人
分类号	G09F13/16	主分类号	G09F13/16
代理机构		代理人
主权项
地址

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