US PATENT SUBCLASS 181 / 294
.~.~ Materials

Current as of: June, 1999
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181 /   HD   ACOUSTICS

175  DF  SOUND-MODIFYING MEANS {12}
284  DF  .~ Sound absorbing panels {8}
294.~.~ Materials

DEFINITION

Classification: 181/294

Materials:

(under subclass 284) Subject matter characterized by the particular sound absorbing material used to form the product.

SEE OR SEARCH CLASS

106, Compositions: Coating or Plastic, for such compositions which have sound deadening properties.

252, Compositions,

62, for heat or sound insulating compositions.

428, Stock Material or Miscellaneous Articles,

411.1+, for laminate characterized by compositions of laminas.