US PATENT SUBCLASS 181 / 210
.~ Sound absorbing fence or screen (e.g., jet engine or vehicle noise)

Current as of: June, 1999
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181 /   HD   ACOUSTICS

175  DF  SOUND-MODIFYING MEANS {12}
210.~ Sound absorbing fence or screen (e.g., jet engine or vehicle noise)

DEFINITION

Classification: 181/210

Sound absorbing fence or screen (e.g., jet engine or vehicle noise):

(under subclass 175) Subject matter comprising physical barriers which absorb, direct, and/or block sound waves from acoustical devices.

(1) Note. Subject matter of this subclass type includes, for example, sound absorbing fences erected along runways at airports and along highways.

SEE OR SEARCH CLASS

244, Aeronautics,

114, for blast deflector fences arranged adjacent to runways.