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Robert L. Campbell
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Hesperia, CA, US
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Patents Grants
last 30 patents
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Patent Grant
Concentric internal combustion rotary engine
Patent number
7,188,602
Issue date
Mar 13, 2007
CLR, LLC
Robert L. Campbell
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Patents Applications
last 30 patents
Information
Patent Application
CONCENTRIC INTERNAL COMBUSTION ROTARY ENGINE
Publication number
20070068481
Publication date
Mar 29, 2007
Robert L. Campbell
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES