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 US06/255,336external-prioritypatent/US4375383A/en
Application filed by Western Packaging Syst LtdfiledCriticalWestern Packaging Syst Ltd
Priority claimed from EP82301970Aexternal-prioritypatent/EP0063484B1/de
Application grantedgrantedCritical
Publication of ATE30535T1publicationCriticalpatent/ATE30535T1/de