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Application filed by Manfred Raetzsch, Reinhardt Nitzsche, Siegfried Schade, Joachim Patzelt, Heinz Kriehmig, Bernd Gutschalk, Peter Schueler, Gerhard KottefiledCriticalManfred Raetzsch
Priority to DD20628778ApriorityCriticalpatent/DD137444A1/de
Publication of DD137444A1publicationCriticalpatent/DD137444A1/de