US PATENT SUBCLASS 181 / 285
.~.~ Load bearing block type structure

Current as of: June, 1999
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181 /   HD   ACOUSTICS

175  DF  SOUND-MODIFYING MEANS {12}
284  DF  .~ Sound absorbing panels {8}
285.~.~ Load bearing block type structure

DEFINITION

Classification: 181/285

Load bearing block type structure:

(under subclass 284) Subject matter comprising sound attenuating structural elements or units, e.g., blocks, sufficiently strong or rigid to support a load.

SEE OR SEARCH CLASS

52, Static Structures (e.g., Buildings),

144+, for a combination of units having an exposed surface configuration having an acoustical function, or a unit with a feature for such a combination.