(under the class definition) Apparatus especially designed to evaporate a liquid in film or thin layer form.
SEE OR SEARCH CLASS
118, Coating Apparatus, appropriate subclasses for apparatus for applying liquid coating material to work.
202, Distillation: Apparatus,
236, for a still in which the distilland to be vaporized is in a thin film.
203, Distillation: Processes, Separatory, 72, and 89 for a process of introducing the distilland into the vaporization zone by spreading it in a thin film over a surface.
454, Ventilation,
110, 157, 223, 291, 328, and 337 for air-moistening attachments for registers.
