.~ Ventilated or permitting substantial air passage {2}
725
.~.~ In head supporting area for breathing
DEFINITION
Classification: 5/725
In head supporting area for breathing:
(under subclass 724) Ventilated mattress wherein apertures or channels are provided in the human skull bearing portion of the pad to facilitate respiration of a generally prone user.
(1) Note. Included in this subclass are mattresses provided with ventilating apertures in their head supporting area to prevent suffocation of infants.
SEE OR SEARCH THIS CLASS, SUBCLASS:
638, for pillow-type devices that have means permitting the passage of air for breathing.
655, for supports especially adapted for supporting infants.
