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Application filed by Helmut Bruenig, Horst Buerger, Manfred Funk, Wilfrid Hannes, Alfred Machold, Peter Schneider, Klaus Schumann, Ulrich ThielefiledCriticalHelmut Bruenig
Priority to DD19638976ApriorityCriticalpatent/DD129200A1/en
Publication of DD129200A1publicationCriticalpatent/DD129200A1/en