Patent classifications
H
ELECTRICITY
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H01
ELECTRIC ELEMENTS
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H01H
ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
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33/00
High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
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H01H33/70
Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
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H01H33/86
the flow of arc-extinguishing fluid under pressure from the contact space being controlled by a valve
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