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Publication of FR758788ApublicationCriticalpatent/FR758788A/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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FR758788D1932-10-051932-10-05Perfectionnement aux soupapes de fermeture automatique des robinets de sécurité pour le gaz
ExpiredFR758788A
(fr)