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 DE19823208992external-prioritypatent/DE3208992A1/en
Priority claimed from DE19823216951external-prioritypatent/DE3216951A1/en
Application filed by Josef WillibaldfiledCriticalJosef Willibald
Priority claimed from EP83101617Aexternal-prioritypatent/EP0088908B1/en
Application grantedgrantedCritical
Publication of ATE28381T1publicationCriticalpatent/ATE28381T1/en