Improvements in ophthalmic lenses,申请号GB19500015930-传众专利搜索

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发明名称	Improvements in ophthalmic lenses
摘要
申请公布号	GB680044(A)	申请公布日期	1952.10.01
申请号	GB19500015930	申请日期	1950.06.26
申请人	AMERICAN OPTICAL COMPANY	发明人	TILLYER EDGAR DERRY
分类号	G02C7/06	主分类号	G02C7/06
代理机构		代理人
主权项
地址

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