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Application filed by Ulrich DriesnackfiledCriticalUlrich Driesnack
Priority to DD20677278ApriorityCriticalpatent/DD137865B1/de
Priority to SU797770649Aprioritypatent/SU1026136A1/ru
Publication of DD137865A1publicationCriticalpatent/DD137865A1/de
Publication of DD137865B1publicationCriticalpatent/DD137865B1/de