Inventor · disambiguated record
Keith W. Sheffield
Also filed as: SHEFFIELD KEITH W
3 granted patents·208 citations·filing 1993–1995
78Inventor score
Files withCREWS INC3
Top patents by PatentIndex Score
3 records- 0191USD372490SSafety glasses and prescription lens insert combinationCREWS INC·Filed 1995·Granted Aug 6, 1996·56 cites·1 claims
- 0271US5428407APrescription lens attachable to safety glassesCREWS INC·Filed 1993·Granted Jun 27, 1995·121 cites·3 claims
- 0364US5608470APrescription lens attachable to safety glassesCREWS INC·Filed 1995·Granted Mar 4, 1997·31 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →