US PATENT SUBCLASS 181 / 216
.~.~.~.~ Longitudinally adjustable section

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}
213  DF  .~.~ Reaction engine type {7}
215  DF  .~.~.~ With adjustable outlet nozzle {1}
216.~.~.~.~ Longitudinally adjustable section

DEFINITION

Classification: 181/216

Longitudinally adjustable section:

(under subclass 215) Subject matter wherein the tail end sections are adjustable longitudinally of the shroud in the downstream direction.