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Priority claimed from FR7909642Aexternal-prioritypatent/FR2454479A1/fr
Priority claimed from FR8007170Aexternal-prioritypatent/FR2479295A2/fr
Application filed by La Cellulose Des ArdennesfiledCriticalLa Cellulose Des Ardennes
Priority claimed from EP80400516Aexternal-prioritypatent/EP0018287B1/de
Application grantedgrantedCritical
Publication of ATE2232T1publicationCriticalpatent/ATE2232T1/de