Assignee
STEREO OPTICAL CO INC
US·5 granted patents·65 citations·filing 1982–1991
Technology mixA61B5
Top patents by PatentIndex Score
5 records- 0133US4968131AVisual acuity test device and method of preparing sameSTEREO OPTICAL CO INC·Filed 1989·Granted Nov 6, 1990·14 cites·15 claims
- 0231US4854695AVisual acuity testingSTEREO OPTICAL CO INC·Filed 1986·Granted Aug 8, 1989·10 cites·4 claims
- 0331US4844607AVision tester with color corrected illuminating systemSTEREO OPTICAL CO INC·Filed 1988·Granted Jul 4, 1989·16 cites·16 claims
- 0429US5216458AApparatus and method for testing visual accuity and contrast sensitivitySTEREO OPTICAL CO INC·Filed 1991·Granted Jun 1, 1993·16 cites·20 claims
- 0528US4452515AEye testing deviceSTEREO OPTICAL CO INC·Filed 1982·Granted Jun 5, 1984·9 cites·13 claims
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