Improvements in or relating to door and postal knockers,申请号GB19580025805-传众专利搜索

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发明名称	Improvements in or relating to door and postal knockers
摘要
申请公布号	GB857729(A)	申请公布日期	1961.01.04
申请号	GB19580025805	申请日期	1958.08.12
申请人	LEWIS JAMES ALEXANDER	发明人
分类号	G10K3/00	主分类号	G10K3/00
代理机构		代理人
主权项
地址

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