US PATENT SUBCLASS 337 / 29
.~.~ Plural

Current as of: June, 1999
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337 /   HD   ELECTRICITY: ELECTROTHERMALLY OR THERMALLY ACTUATED SWITCHES

14  DF  ELECTROTHERMALLY ACTUATED SWITCHES {9}
28  DF  .~ Space discharge device (gaps, lightning arrester, etc.) {4}
29.~.~ Plural

DEFINITION

Classification: 337/29

(under subclass 28) Subject matter including at least two or more electrothermal switching devices combined with at least one protective gap or at least two or more protective gaps combined with a single art type switching device.

SEE OR SEARCH THIS CLASS, SUBCLASS:

42+, for electrothermally actuated plural switches of the bimetallic type.

338+, for thermally actuated plural switches of the bimetallic type.