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F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
F02D—CONTROLLING COMBUSTION ENGINES
F02D15/00—Varying compression ratio
F02D15/02—Varying compression ratio by alteration or displacement of piston stroke
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FR678621D1928-11-101928-11-10Perfectionnements aux dispositifs de commande de- la variation de course des pistons dans les moteurs à explosion
ExpiredFR678621A
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