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Application filed by Gerd Rosenberg, Rolf Blueher, Plass Hans Juergen, Wolfram Tittel, Richard HoppfiledCriticalGerd Rosenberg
Priority to DD19616476ApriorityCriticalpatent/DD128471B1/de
Publication of DD128471A1publicationCriticalpatent/DD128471A1/de
Publication of DD128471B1publicationCriticalpatent/DD128471B1/de