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 DE19808020280external-prioritypatent/DE8020280U1/en
Priority claimed from DE19818111728external-prioritypatent/DE8111728U1/en
Application filed by Helmut GruenerfiledCriticalHelmut Gruener
Priority claimed from EP81710033Aexternal-prioritypatent/EP0045274B1/en
Application grantedgrantedCritical
Publication of ATE19613T1publicationCriticalpatent/ATE19613T1/en