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Application filed by Paul Grothe, Eberhard Haack, Gert Schaefer, Karlheinz Wolf, Manfred Chemnitz, Gerd Geipel, Joachim Liebeck, Gerhard Raabs, Lothar Richter, Marlies RichterfiledCriticalPaul Grothe
Priority to DD20560478ApriorityCriticalpatent/DD136697A1/de
Publication of DD136697A1publicationCriticalpatent/DD136697A1/de