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 US05/924,855external-prioritypatent/US4276467A/en
Application filed by The Mead CorporationfiledCriticalThe Mead Corporation
Priority claimed from EP79301419Aexternal-prioritypatent/EP0007248B1/en
Application grantedgrantedCritical
Publication of ATE3914T1publicationCriticalpatent/ATE3914T1/en