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Priority claimed from DE19681778850external-prioritypatent/DE1778850C/en
Priority claimed from DE19691911116external-prioritypatent/DE1911116C3/en
Priority claimed from DK305169Aexternal-prioritypatent/DK125727B/en
Application filed by F X SprollfiledCriticalF X Sproll
Publication of DK133078BpublicationCriticalpatent/DK133078B/en
Application grantedgrantedCritical
Publication of DK133078CpublicationCriticalpatent/DK133078C/en