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Priority claimed from DE19691934767external-prioritypatent/DE1934767C3/en
Priority claimed from FI1727/70Aexternal-prioritypatent/FI54248C/en
Application filed by Vakuum Vulk Holdings LtdfiledCriticalVakuum Vulk Holdings Ltd
Publication of FI781859ApublicationCriticalpatent/FI781859A/en
Publication of FI57226BpublicationCriticalpatent/FI57226B/en
Application grantedgrantedCritical
Publication of FI57226CpublicationCriticalpatent/FI57226C/en