Patent US1515389 - GOGGLES

Patents

Inventors: CLARENCE V. HOPKINS, CLARENCE V. HOPKINS
Current U.S. Classification: 351/44; 359/228; 359/601; D16/336

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Citing Patent	Filing date	Issue date	Original Assignee	Title
US3972319	26 Jan 1976	3 Aug 1976		Wind mosaic glasses
US5229885	3 Sep 1991	20 Jul 1993		Infinitely variable focal power lens units precisely matched to varying distances by radar and electronics
US5956183	26 May 1998	21 Sep 1999		Field-customizable variable focal length lens