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Application filed by Konrad Buehler, Helmut Dorschner, Adolf Heger, Christa Keil, Werner Lauterberg, Reinhard Schramme, Herbert SteinmetzerfiledCriticalKonrad Buehler
Priority to DD20604678ApriorityCriticalpatent/DD137363A1/de
Publication of DD137363A1publicationCriticalpatent/DD137363A1/de