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 GB868613791Aexternal-prioritypatent/GB8613791D0/en
Priority claimed from GB8710016Aexternal-prioritypatent/GB2191207B/en
Application filed by Enigma NvfiledCriticalEnigma Nv
Priority claimed from EP19870600007external-prioritypatent/EP0252867B1/en
Application grantedgrantedCritical
Publication of ATE104687T1publicationCriticalpatent/ATE104687T1/en