Vision tester

- PRIO Corporation
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Description

FIG. 1 is a perspective view of a vision tester, showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is the right side elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a back elevational view thereof; and,

FIG. 7 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
D298457 November 8, 1988 Minkin et al.
D342317 December 14, 1993 Orlinsky et al.
4764007 August 16, 1988 Task
4998820 March 12, 1991 Salibello
Patent History
Patent number: D348931
Type: Grant
Filed: Nov 9, 1992
Date of Patent: Jul 19, 1994
Assignee: PRIO Corporation (Portland, OR)
Inventor: Jonathan G. Torrey (Portland, OR)
Primary Examiner: Stella Reid
Law Firm: Marger, Johnson, McCollom & Stolowitz
Application Number: 0/1,294
Classifications
Current U.S. Class: Ophthalmic (44) (D24/172)