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 DE3924656Aexternal-prioritypatent/DE3924656C1/de
Application filed by Schmidt Alfred Ing GmbhfiledCriticalSchmidt Alfred Ing Gmbh
Application grantedgrantedCritical
Publication of ATE87686T1publicationCriticalpatent/ATE87686T1/de