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Application filed by Detlef Ballschuh, Roland Ohme, Jochen RuschefiledCriticalDetlef Ballschuh
Priority to DD20541578ApriorityCriticalpatent/DD136497B1/en
Publication of DD136497A1publicationCriticalpatent/DD136497A1/en
Publication of DD136497B1publicationCriticalpatent/DD136497B1/en