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 DE2545463Aexternal-prioritypatent/DE2545463C2/de
Priority claimed from NO763430Aexternal-prioritypatent/NO152594C/no
Publication of NO834029LpublicationCriticalpatent/NO834029L/no
Application filed by Vakuum Vulk Holdings LtdfiledCriticalVakuum Vulk Holdings Ltd
Publication of NO166318BpublicationCriticalpatent/NO166318B/no
Publication of NO166318CpublicationCriticalpatent/NO166318C/no