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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25/00
Engines characterised by using fresh charge for scavenging cylinders
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F02B25/02
using unidirectional scavenging
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F02B25/08
Engines with oppositely-moving reciprocating working pistons
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