(under subclass 23.2) Devices in which the attachment of at least one receptacle to another receptacle of the set is by the fabrication of a part or all of the wall or bottom portions of two or more of the respective receptacles from a common sheet member or mass.
SEE OR SEARCH THIS CLASS, SUBCLASS:
23.2, for two or more receptacles joined by "integral" bonds, such as by welding, brazing or soldering.
