(under subclass 78) Subject matter wherein the device includes significant contact structure or composition particularly adapted for use in a polarized type switch.
SEE OR SEARCH THIS CLASS, SUBCLASS:
56+, for switches utilizing conductive liquid with particular contact or electrode structure.
94, for periodic switches with particular contact arrangement or composition.
133+, for multiple contact switches with particular contact structure or arrangement.
196+, for other significant contact structure not peculiarly adapted to a particular type switch.
