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Publication of FR933394ApublicationCriticalpatent/FR933394A/fr
F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
F16J—PISTONS; CYLINDERS; SEALINGS
F16J9/00—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction
F16J9/04—Helical rings
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FR933394D1945-09-131946-09-11Piston pour moteur à explosions ou à combustion interne
ExpiredFR933394A
(fr)