US PATENT SUBCLASS 218 / 49
.~.~.~ Fixed

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}
48  DF  .~.~ Contact structure {2}
49.~.~.~ Fixed

DEFINITION

Classification: 218/49

Fixed:

(under subclass 48) Subject matter including a conducting part having a contact surface which remains substantially stationary.