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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F02B
INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
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51/00
Other methods of operating engines involving pretreating of, or adding substances to, combustion air, fuel, or fuel-air mixture of the engines
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F02B51/02
involving catalysts
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