Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Publication of BE521790ApublicationCriticalpatent/BE521790A/xx
H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid