US PATENT SUBCLASS 181 / 283
.~.~.~.~ Air or liquid cooled

Current as of: June, 1999
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181 /   HD   ACOUSTICS

175  DF  SOUND-MODIFYING MEANS {12}
212  DF  .~ Muffler, fluid conducting type {25}
264  DF  .~.~ With baffle or baffle structure {9}
282  DF  .~.~.~ Casings {1}
283.~.~.~.~ Air or liquid cooled

DEFINITION

Classification: 181/283

Air or liquid cooled:

(under subclass 282) Subject matter having a chamber or other structure for providing a cooling fluid to lower the temperature of the moving exhaust fluids.