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 DE19803008165external-prioritypatent/DE3008165C2/de
Priority claimed from DE19803024800external-prioritypatent/DE3024800C2/de
Application filed by Esselte Pendaflex CorpfiledCriticalEsselte Pendaflex Corp
Priority claimed from EP81101386Aexternal-prioritypatent/EP0035240B1/de
Application grantedgrantedCritical
Publication of ATE17839T1publicationCriticalpatent/ATE17839T1/de