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Application filed by Klaus Dietrich, Wolfram Diecke, Kurt Eckhardt, Eike Rehfeld, Helmut Jahr, Klaus HerrmannfiledCriticalKlaus Dietrich
Priority to DD20681478ApriorityCriticalpatent/DD137954B1/en
Publication of DD137954A1publicationCriticalpatent/DD137954A1/en
Publication of DD137954B1publicationCriticalpatent/DD137954B1/en