US PATENT SUBCLASS 337 / 243
.~.~.~.~.~ Chemical means

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

14  DF  ELECTROTHERMALLY ACTUATED SWITCHES {9}
142  DF  .~ Fusible element actuated {15}
227  DF  .~.~ Fuse link carrier or holder {2}
228  DF  .~.~.~ Cartridge or tube {9}
241  DF  .~.~.~.~ With indicating or inspection means {3}
243.~.~.~.~.~ Chemical means

DEFINITION

Classification: 337/243

(under subclass 241) Subject matter wherein the indicating means is specifically recited as consisting of a chemical composition which is capable of changing state or color upon the application of heat due to rupture of the fusible element, as, for example, pyrotechnic compositions.

SEE OR SEARCH CLASS

149, Explosive and Thermic Compositions or Charges,

37+, for pyrotechnic compositions, per se, useful as indicating means.