US PATENT SUBCLASS 218 / 51
.~.~ With gas flow means

Current as of: June, 1999
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218 /   HD   HIGH-VOLTAGE SWITCHES WITH ARC PREVENTING OR EXTINGUISHING DEVICES

1  DF  ARC PREVENTING OR EXTINGUISHING DEVICES {14}
43  DF  .~ Air-current blowout {18}
51.~.~ With gas flow means {1}
52  DF  .~.~.~> Exhaust port

DEFINITION

Classification: 218/51

With gas flow means:

(under subclass 43) Subject matter including means defining a confined channel for conveying a dielectric gas along a path from a source through the confined channel.