Visual acuity meter for measuring the potential visual acuity of the eye of a patient

- Mentor O & O, Inc.
Description

FIG. 1 is a perspective view of a visual acuity meter for measuring the potential visual acuity of the eye of a patient showing my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a right side elevation view thereof; and

FIG. 5 is a rear elevation view thereof;

FIG. 6 is a left side elevation view thereof, on an enlarged scale.

Referenced Cited
U.S. Patent Documents
3532418 October 1970 Schainholz et al.
3623799 November 1971 Millodot
Foreign Patent Documents
2616139 October 1977 DEX
Patent History
Patent number: D281533
Type: Grant
Filed: Aug 25, 1982
Date of Patent: Nov 26, 1985
Assignee: Mentor O & O, Inc. (Hingham, MA)
Inventor: Richard Seager (Mystic, CT)
Primary Examiner: James M. Gandy
Law Firm: Morse, Altman & Dacey
Application Number: 6/411,564
Classifications