Assignee
LEWIS RALPH H
US·3 granted patents·1 pending application·385 citations·filing 1988–2007
Top patents by PatentIndex Score
4 records- 0195US4799477ARebreathing maskLEWIS RALPH H·Filed 1988·Granted Jan 24, 1989·247 cites·3 claims
- 0292US5873250ANon-polluting open Brayton cycle automotive power unitLEWIS RALPH H·Filed 1997·Granted Feb 23, 1999·80 cites·21 claims
- 0379US5634339ANon-polluting, open brayton cycle automotive power unitLEWIS RALPH H·Filed 1995·Granted Jun 3, 1997·58 cites·25 claims
- 0448US2010174380A1Extended range of motion, constrained prosthetic hip-jointLEWIS RALPH H·Filed 2007·Application pending·0 cites
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