(under the class definition) Device for holding work by means of a work engaging material, changeable from liquid or fluent state (which liquid state permits movement of the work) to a solid or rigid state (which solid state immobilizes the work).
(1) Note. Included here are patents which hold work by means of freezing a portion in ice.
SEE OR SEARCH CLASS
62, Refrigeration, appropriate subclasses, for patents to a refrigeration process and/or apparatus, per se.
