Patent classifications
F
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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F02
COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
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F02D
CONTROLLING COMBUSTION ENGINES
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21/00
Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas
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F02D21/06
peculiar to engines having other non-fuel gas added to combustion air
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F02D21/08
the other gas being the exhaust gas of engine
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