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Publication of FR59699EpublicationCriticalpatent/FR59699E/fr
F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
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FR59699D1949-11-281949-11-28Vanne de sécurité à fermeture et blocage automatiques pour le gaz de ville
ExpiredFR59699E
(fr)