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Application filed by Gerd West, Horst Boettcher, Gerhard Hanisch, Reinhold Groeger, Horst Groessl, Dieter Papendieck, Joerg BegerfiledCriticalGerd West
Priority to DD20776078ApriorityCriticalpatent/DD138832A1/de
Publication of DD138832A1publicationCriticalpatent/DD138832A1/de