.~> Changing state mass within or fluid flow through working member or carrier {2}
DEFINITION
Classification: 416/95
(under the class definition) Apparatus having means associated therewith (1) to heat or cool the apparatus or working fluid* or to minimize the transfer of heat thereto or therefrom by shielding or structural arrangement.
(1) Note. Insofar as many arrangements, structures and materials inherently function to heat, cool or insulate, the patent must disclose heating, cooling or insulation as a function of the claimed subject matter for classification in this subclass.
