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 GB878711221Aexternal-prioritypatent/GB8711221D0/en
Priority claimed from GB888807257Aexternal-prioritypatent/GB8807257D0/en
Priority claimed from GB888807258Aexternal-prioritypatent/GB8807258D0/en
Application filed by Gillman & Soame LtdfiledCriticalGillman & Soame Ltd
Priority claimed from EP88304224Aexternal-prioritypatent/EP0291275B1/en
Application grantedgrantedCritical
Publication of ATE72688T1publicationCriticalpatent/ATE72688T1/en