CPC Subgroup
H01H 33/668 Means for obtaining or monitoring the vacuum
Full Title
High-tension or heavy-current switches with arc-extinguishing or arc-preventing means > Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid > Vacuum switches > Means for obtaining or monitoring the vacuum
2 direct subcodes
Child Classifications
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