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Application filed by Snia ViscosafiledCriticalSnia Viscosa
Priority to IT2399079ApriorityCriticalpatent/IT1165139B/it
Publication of IT7923990A0publicationCriticalpatent/IT7923990A0/it
Priority to DE19803039321prioritypatent/DE3039321A1/de
Priority to NL8005784Aprioritypatent/NL8005784A/nl
Priority to US06/292,423prioritypatent/US4418016A/en
Application grantedgrantedCritical
Publication of IT1165139BpublicationCriticalpatent/IT1165139B/it