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Application filed by Johannes Kreis, Anton Kullmann, Juergen Lehfeldt, Werner Lier, Gerhard Moser, Guenter Salewski, Henning ZobelfiledCriticalJohannes Kreis
Priority to DD22330980ApriorityCriticalpatent/DD152577A1/de
Priority to CS815975Aprioritypatent/CS237965B1/cs
Priority to BG5326681Aprioritypatent/BG43103A1/xx
Publication of DD152577A1publicationCriticalpatent/DD152577A1/de