Description
Class D01F : CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES, OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
Subclass 2/20: Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from viscose (preparation of alkali cellulose C08B) Composition of the spinning solution or the bath (preparing or dissolving cellulose xanthate C08B) for the manufacture of hollow threads