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.)
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Publication date
Priority claimed from US05/755,832external-prioritypatent/US4087376A/en
Priority claimed from AT931277Aexternal-prioritypatent/AT361894B/en
Application filed by Appleton Paper IncfiledCriticalAppleton Paper Inc
Priority to AT224780ApriorityCriticalpatent/AT377453B/en
Priority claimed from YU01537/81Aexternal-prioritypatent/YU153781A/en
Publication of ATA224780ApublicationCriticalpatent/ATA224780A/en
Application grantedgrantedCritical
Publication of AT377453BpublicationCriticalpatent/AT377453B/en