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 GB858523933Aexternal-prioritypatent/GB8523933D0/en
Application filed by British Shipbuilders EngfiledCriticalBritish Shipbuilders Eng
Application grantedgrantedCritical
Publication of ATE58943T1publicationCriticalpatent/ATE58943T1/de