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 DE3528446Aexternal-prioritypatent/DE3528446C1/en
Application filed by Hanschen HermannfiledCriticalHanschen Hermann
Application grantedgrantedCritical
Publication of ATE47906T1publicationCriticalpatent/ATE47906T1/en