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Application filed by Hans Johne, Arndt Jentzsch, Guenter SchumannfiledCriticalHans Johne
Priority to DD7600193690ApriorityCriticalpatent/DD128408A1/de
Priority to DE19772720315prioritypatent/DE2720315A1/de
Priority to SE7707669Aprioritypatent/SE7707669L/xx
Publication of DD128408A1publicationCriticalpatent/DD128408A1/de