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 GB8605950Aexternal-prioritypatent/GB2174838B/en
Application filed by English Electric Valve Co LtdfiledCriticalEnglish Electric Valve Co Ltd
Priority claimed from EP86302645Aexternal-prioritypatent/EP0199500B1/de
Application grantedgrantedCritical
Publication of ATE55656T1publicationCriticalpatent/ATE55656T1/de