Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DD32100088Aexternal-prioritypatent/DD293957A5/en
Priority claimed from DD32099988Aexternal-prioritypatent/DD300262A7/en
Application filed by Univ Chemnitz TechfiledCriticalUniv Chemnitz Tech
Priority claimed from EP19890119517external-prioritypatent/EP0366018B1/en
Application grantedgrantedCritical
Publication of ATE89751T1publicationCriticalpatent/ATE89751T1/en