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 GB858515992Aexternal-prioritypatent/GB8515992D0/en
Application filed by Robert HesterfiledCriticalRobert Hester
Application grantedgrantedCritical
Publication of ATE51517T1publicationCriticalpatent/ATE51517T1/en