发明名称 Adjustable bows for loupe frame
摘要 An adjustable loupe frame is provided consisting of telescopic, spring-biased right and left bows and a loupe mounting bracket extending between and joined pivotably to the front ends of telescopic bows. The bows are adjustable to vary the distance between the loupe and the eyes of a viewer, so that an object to be viewed can be focused properly at any time.
申请公布号 US4676609(A) 申请公布日期 1987.06.30
申请号 US19830555821 申请日期 1983.11.28
申请人 MATSUI, SABURO;YOKOYAMA, MASAKAZU 发明人 MATSUI, SABURO
分类号 G02C5/20;G02C7/08;G02C9/00;(IPC1-7):G02C5/20;G02B25/00 主分类号 G02C5/20
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