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Application filed by Walli Kommanditgesellschaft HfiledCriticalWalli Kommanditgesellschaft H
Priority to AT612768ApriorityCriticalpatent/AT288145B/en
Priority to DE19691926713prioritypatent/DE1926713C3/en
Priority to FR6919320Aprioritypatent/FR2011679A1/en
Application grantedgrantedCritical
Publication of AT288145BpublicationCriticalpatent/AT288145B/en
Process for the production of non-blackened paper pulp with undestroyed fibers from printed waste paper or the like and device for carrying out the process