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Application filed by Knapp Alfons Dr, GermaniafiledCriticalKnapp Alfons Dr
Priority to IT67572/78ApriorityCriticalpatent/IT1156920B/en
Publication of IT7867572A0publicationCriticalpatent/IT7867572A0/en
Application grantedgrantedCritical
Publication of IT1156920BpublicationCriticalpatent/IT1156920B/en