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Application filed by Wolfgang Moeckel, Wolfgang Friedrich, Frans Steffers, Gerhard Haeussler, Norbert Niklas, Arno Seifert, Klaus VoigtfiledCriticalWolfgang Moeckel
Priority to DD20702778ApriorityCriticalpatent/DD138057A1/en
Publication of DD138057A1publicationCriticalpatent/DD138057A1/en