Description
This is the generic class for (1) the separation of liquids fromsolids, i.e., drying; (2) the contacting of solids with either,or both, gases or vapors; and (3) feather treatment.
It has both process and apparatus not elsewhere provided forbut no products thereof. When a product is claimed it is classifiedin the class appropriate thereto and cross-referenced here for theprocess or apparatus.
In the definitions of this class, "material" meansthat which is undergoing treatment, which may be of any kind orform and includes the living body.