Stephen Howarth

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Nottingham, GB

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Patents Grantslast 30 patents

Information Patent Grant
Device for extracting and burning methane
- Patent number 4,907,964
- Issue date Mar 13, 1990
- Coal Industry (Patents) Limited
- Stephen Howarth
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS