The still has means for introducing the distilland in the form of a spray or for forming a spray after its introduction, or the distilland flows into or through the still in the form of a film.
SEE OR SEARCH CLASS
159, Concentrating Evaporators,
3+, for a spray evaporator and subclasses 5+ for a film evaporator.
196, Mineral Oils: Apparatus,
128,.
203, Distillation: Processes, Separatory,
90, for a distillation process of spraying the distilland into the distillation zone and subclasses 72 and 89 for distillation utilizing filming.
