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 GB858525854Aexternal-prioritypatent/GB8525854D0/en
Application filed by Bernard HooperfiledCriticalBernard Hooper
Application grantedgrantedCritical
Publication of ATE42802T1publicationCriticalpatent/ATE42802T1/de