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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
F16K49/00—Means in or on valves for heating or cooling
F16K49/002—Electric heating means
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FR623999D1926-11-031926-11-03Robinet de puisage à chauffage électrique pour liquides se solidifiant facilement
ExpiredFR623999A
(fr)