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 DE3831123Aexternal-prioritypatent/DE3831123A1/en
Application filed by Gerd ThoenefiledCriticalGerd Thoene
Application grantedgrantedCritical
Publication of ATE77866T1publicationCriticalpatent/ATE77866T1/en