US PATENT SUBCLASS 96 / 381
.~ Sound absorbing material

Current as of: June, 1999
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96 /   HD   GAS SEPARATION: APPARATUS

380  DF  WITH SOUND DAMPING MEANS (I.E., NOISE ATTENUATION) {2}
381.~ Sound absorbing material {2}
382  DF  .~.~> For vacuum cleaner
383  DF  .~.~> For internal combustion engine

DEFINITION

Classification: 96/381

Sound absorbing material:

(under subclass 380) Apparatus having sound damping means or flow channel surfaces made with material having noise attenuation properties in order to reduce noise.