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 GB28055/75Aexternal-prioritypatent/GB1558169A/en
Priority claimed from FR7603197Aexternal-prioritypatent/FR2313764A1/en
Application filed by Albright & WilsonfiledCriticalAlbright & Wilson
Publication of HK53482ApublicationCriticalpatent/HK53482A/en