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Application filed by Univ Dev FoundationfiledCriticalUniv Dev Foundation
Publication of FI49192BpublicationCriticalpatent/FI49192B/fi
Application grantedgrantedCritical
Publication of FI49192CpublicationCriticalpatent/FI49192C/sv
D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
D21C3/00—Pulping cellulose-containing materials
D21C3/04—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides
FI5269A1968-01-091969-01-09Förfarande för framställning av pappersmassa.
FI49192C
(sv)