US PATENT SUBCLASS 218 / 141
.~.~ With magnetic coil

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}
141.~.~ With magnetic coil {1}
142  DF  .~.~.~> Located inside housing

DEFINITION

Classification: 218/141

With magnetic coil:

(under subclass 118) Subject matter including a winding of an electromagnet disposed so as to develop an axial magnetic field for diffusing an arc.