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 DE3401140Aexternal-prioritypatent/DE3401140C1/en
Application filed by Fraunhofer Ges ForschungfiledCriticalFraunhofer Ges Forschung
Application grantedgrantedCritical
Publication of ATE31581T1publicationCriticalpatent/ATE31581T1/en