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/en
Priority claimed from DE2617760Aexternal-prioritypatent/DE2617760C2/en
Priority claimed from FI762832Aexternal-prioritypatent/FI66311C/en
Application filed by Vakuum Vulk Holdings LtdfiledCriticalVakuum Vulk Holdings Ltd
Publication of FI791743ApublicationCriticalpatent/FI791743A/en
Publication of FI66312BpublicationCriticalpatent/FI66312B/en
Application grantedgrantedCritical
Publication of FI66312CpublicationCriticalpatent/FI66312C/en