US PATENT SUBCLASS 181 / 214
.~.~.~ Upstream (e.g., intake silencer)

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}
214.~.~.~ Upstream (e.g., intake silencer)

DEFINITION

Classification: 181/214

Upstream (e.g., intake silencer):

(under subclass 213) Subject matter wherein the attenuating device is at the air intake side of the engine shroud.

SEE OR SEARCH THIS CLASS, SUBCLASS:

229, for internal-combustion engines having attenuating devices for the carburetor air intake.