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 CH546981Aexternal-prioritypatent/CH653418A5/en
Priority claimed from CH119282Aexternal-prioritypatent/CH654630A5/en
Application filed by Fischer Ag GeorgfiledCriticalFischer Ag Georg
Priority claimed from EP19820107691external-prioritypatent/EP0073050B1/en
Application grantedgrantedCritical
Publication of ATE16632T1publicationCriticalpatent/ATE16632T1/en