Improvements in or relating to spectacle frames,申请号GB19470012758-传众专利搜索

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发明名称	Improvements in or relating to spectacle frames
摘要
申请公布号	GB623682(A)	申请公布日期	1949.05.20
申请号	GB19470012758	申请日期	1947.05.12
申请人	DENNIS WILLIAM STEWART CAMPBELL	发明人
分类号	G02C5/22	主分类号	G02C5/22
代理机构		代理人
主权项
地址

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