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Priority claimed from DE19702023005external-prioritypatent/DE2023005C/en
Priority claimed from DE19712117598external-prioritypatent/DE2117598A1/en
Priority claimed from DE19712125470external-prioritypatent/DE2125470C3/en
Application filed by Prym Werke WilliamfiledCriticalPrym Werke William
Application grantedgrantedCritical
Publication of AT325537BpublicationCriticalpatent/AT325537B/en