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 US06/926,142external-prioritypatent/US4796905A/en
Priority claimed from GB868627319Aexternal-prioritypatent/GB8627319D0/en
Priority claimed from GB878706110Aexternal-prioritypatent/GB8706110D0/en
Priority claimed from GB878715220Aexternal-prioritypatent/GB8715220D0/en
Application filed by Patrick F SullivanfiledCriticalPatrick F Sullivan
Priority claimed from EP19870309672external-prioritypatent/EP0266228B1/de
Application grantedgrantedCritical
Publication of ATE76828T1publicationCriticalpatent/ATE76828T1/de