Assignee
R H BURTON COMPANY
US·7 granted patents·106 citations·filing 1983–1995
Top patents by PatentIndex Score
7 records- 0148US4523822ARefractor with optically encoded cylinder axis positionR H BURTON COMPANY·Filed 1983·Granted Jun 18, 1985·25 cites·20 claims
- 0245USD344587SOphthalmic refractorR H BURTON COMPANY·Filed 1991·Granted Feb 22, 1994·5 cites·1 claims
- 0342US4606624ARefractor having simplified cylinder lens assemblyR H BURTON COMPANY·Filed 1983·Granted Aug 19, 1986·18 cites·5 claims
- 0439US5520363AOphthalmic examination chair positioning systemR H BURTON COMPANY·Filed 1994·Granted May 28, 1996·15 cites·28 claims
- 0539USD365149SOphthalmic refractorR H BURTON COMPANY·Filed 1994·Granted Dec 12, 1995·3 cites·1 claims
- 0637US5281984AIllumination apparatus for ophthalmic refractorsR H BURTON COMPANY·Filed 1992·Granted Jan 25, 1994·26 cites·19 claims
- 0736US5580023AIntegrated ophthalmic examination chair and positioning systemR H BURTON COMPANY·Filed 1995·Granted Dec 3, 1996·14 cites·23 claims
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