US PATENT SUBCLASS 5 / 638
.~.~ With means to permit the passage of air for breathing

Current as of: June, 1999
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5 /   HD   BEDS

630  DF  SUPPORT MEANS FOR DISCRETE PORTION OF USER, USEABLE WITH BED OR SURGICAL SUPPORT {5}
636  DF  .~ For head or neck (e.g., pillow) {9}
638.~.~ With means to permit the passage of air for breathing

DEFINITION

Classification: 5/638

With means to permit the passage of air for breathing:

(under subclass 636) Subject matter in which the head or neck supporting means contains a passage or hole through which a user can breathe, or being formed from such material (e.g., low density) that air can readily pass therethrough.

SEE OR SEARCH THIS CLASS, SUBCLASS:

725, for mattresses permitting breathing therethrough.