(under subclass 686) Waterbed with unitary bladder in which the user supporting liquid enclosing structure has a surrounding or internal air or other fluid containing compartment that is integral with the structure, or in which the liquid enclosing structure is divided by an air or other fluid containing compartment into separate and distinct compartments that cannot be removed or replaced relative to each other.
SEE OR SEARCH THIS CLASS, SUBCLASS:
680+, for waterbeds that may have foam or inflatable peripheral elements, in which the bladder is removable from the peripheral elements.
