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 CA000478052Aexternal-prioritypatent/CA1238752A/en
Application filed by At Plastics IncfiledCriticalAt Plastics Inc
Priority claimed from EP85308510Aexternal-prioritypatent/EP0184362B1/de
Application grantedgrantedCritical
Publication of ATE64723T1publicationCriticalpatent/ATE64723T1/de