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 GB838301862Aexternal-prioritypatent/GB8301862D0/en
Application filed by Andrewson LtdfiledCriticalAndrewson Ltd
Priority claimed from EP19830307738external-prioritypatent/EP0116770B1/en
Application grantedgrantedCritical
Publication of ATE26963T1publicationCriticalpatent/ATE26963T1/en