US PATENT SUBCLASS 218 / 130
.~.~.~.~ Specific material

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}
118  DF  .~ Vacuum {5}
121  DF  .~.~ Single-pole {3}
123  DF  .~.~.~ Contact structure {5}
130.~.~.~.~ Specific material {3}
131  DF  .~.~.~.~.~> Getter
132  DF  .~.~.~.~.~> Alloy
133  DF  .~.~.~.~.~> Beryllium

DEFINITION

Classification: 218/130

Specific material:

(under subclass 123) Subject matter including significant details of substances of which electrical connecting means is composed.