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 DE3518627Aexternal-prioritypatent/DE3518627C3/de
Application filed by Ehrensperger C AgfiledCriticalEhrensperger C Ag
Application grantedgrantedCritical
Publication of ATE42721T1publicationCriticalpatent/ATE42721T1/de