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The ornamental design for a vision tester, as shown. |
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FIG. 1 is a perspective view of a vision tester showing our new design.
FIG. 2 is a front elevational view thereof;
FIG. 3 is a back elevational view thereof;
FIG. 4 is a side elevational view thereof;
FIG. 5 is a top plan view thereof;
FIG. 6 is a bottom plan view thereof.
Minkin, Neil, Minkin, Bonnie L.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Jan 24 1986 | Optical Technology Corporation | (assignment on the face of the patent) | / |
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