Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from FR7816114Aexternal-prioritypatent/FR2427256A1/fr
Priority claimed from FR7817077Aexternal-prioritypatent/FR2427949A1/fr
Application filed by Mead CorpfiledCriticalMead Corp
Publication of IT7968151A0publicationCriticalpatent/IT7968151A0/it
Application grantedgrantedCritical
Publication of IT1118736BpublicationCriticalpatent/IT1118736B/it