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.)
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Publication date
Priority claimed from GB48616/75Aexternal-prioritypatent/GB1507739A/en
Application filed by Wiggins Teape LtdfiledCriticalWiggins Teape Ltd
Priority to PL19638077ApriorityCriticalpatent/PL119657B1/pl
Publication of PL196380A1publicationCriticalpatent/PL196380A1/pl
Publication of PL119657B1publicationCriticalpatent/PL119657B1/pl