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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
F16K35/00—Means to prevent accidental or unauthorised actuation
F16K35/14—Means to prevent accidental or unauthorised actuation interlocking two or more valves
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FR635939D1927-06-141927-06-14Dispositif de sécurité pour appareils à gaz
ExpiredFR635939A
(fr)