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Priority to NL6604300ApriorityCriticalpatent/NL6604300A/xx
Priority to BE694082Dprioritypatent/BE694082A/xx
Priority to GB758567Aprioritypatent/GB1147265A/en
Priority to FR99596Aprioritypatent/FR1519049A/fr
Publication of NL6604300ApublicationCriticalpatent/NL6604300A/xx
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