(under subclass 12.1) Subject matter wherein a wall of a receptacle includes at least two self sustaining layers separated from one another in face to face relationship, and a material which inhibits the transfer of heat is located between the layers.
SEE OR SEARCH THIS CLASS, SUBCLASS:
12.1, for a receptacle having spaced wall panels with air or a vacuum between them.
12.2, for a receptacle having a coating or lamination.
