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David Henry Butcher
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Slinfold, near Horsham, Sussex, GB
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last 30 patents
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Patent Grant
Pressure-responsive transducer for regulating internal combustion e...
Patent number
4,100,893
Issue date
Jul 18, 1978
David Henry Butcher
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS