Improvements in and relating to spectacle side-pieces,申请号GB19300010641-传众专利搜索

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发明名称	Improvements in and relating to spectacle side-pieces
摘要
申请公布号	GB338475(A)	申请公布日期	1930.11.20
申请号	GB19300010641	申请日期	1930.04.03
申请人	KARL WILLMANN;OTTO MEITZNER	发明人
分类号	G02C5/00;G02C5/16	主分类号	G02C5/00
代理机构		代理人
主权项
地址

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