Apparatus for improving the effective use of eyesight and preventing strain on the eyes,申请号US19440553154-传众专利搜索

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发明名称	Apparatus for improving the effective use of eyesight and preventing strain on the eyes
摘要
申请公布号	US2406190(A)	申请公布日期	1946.08.20
申请号	US19440553154	申请日期	1944.09.08
申请人	LAURENCE BURDICK CHARLES	发明人	BURDICK CHARLES LAURENCE
分类号	G02C7/16	主分类号	G02C7/16
代理机构		代理人
主权项
地址

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