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 DE3817283Aexternal-prioritypatent/DE3817283A1/en
Application filed by Peter Cremer, Joachim HamannfiledCriticalPeter Cremer
Application grantedgrantedCritical
Publication of ATE75430T1publicationCriticalpatent/ATE75430T1/en