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 GB9277/77Aexternal-prioritypatent/GB1599032A/en
Priority claimed from AT148378Aexternal-prioritypatent/AT359773B/de
Application filed by May & Baker LtdfiledCriticalMay & Baker Ltd
Priority to AT810879ApriorityCriticalpatent/ATA810879A/de
Publication of ATA810879ApublicationCriticalpatent/ATA810879A/de