With disparate article or article retention means:
(under subclass 690) Mattress including various outside the class devices such as (a) a gun, sound emitting means, or safe, or (b) pocket or cavity adapted to accommodate such a device.
(1) Note. Disparate articles that provide or alter the body supporting structure of the mattress, such as springs, stiffening boards, or insulating materials, and disparate articles, such as head supports, ventilating fans, or bedclothes retaining means, that are provided for elsewhere under this mainline title are excluded from this subclass.
