US PATENT SUBCLASS 181 / 217
.~.~.~ Removable silencer unit (e.g., mobile)

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}
217.~.~.~ Removable silencer unit (e.g., mobile)

DEFINITION

Classification: 181/217

Removable silencer unit (e.g., mobile):

(under subclass 213) Subject matter wherein the fluid conducting device can be attached to and detached from the

exhaust end of the jet engine exhaust nozzle.

(1) Note. Subject matter of this subclass type, because of its size, is usually mounted on wheels or other means for mobility.