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F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
F02B71/00—Free-piston engines; Engines without rotary main shaft
F02B71/04—Adaptations of such engines for special use; Combinations of such engines with apparatus driven thereby
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FR969931D1948-07-281948-07-28
motor element with detent on four movable faces in the same cylinder or two opposite cylinders on the same axis
ExpiredFR969931A
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Rotary piston combustion engine or the like of the trochoidal configuration type, in particular for the propulsion of motor vehicles, and its various applications