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
Application filed by Paavo HaavikkofiledCriticalPaavo Haavikko
Priority claimed from EP90916486Aexternal-prioritypatent/EP0557271B1/en
Application grantedgrantedCritical
Publication of ATE123105T1publicationCriticalpatent/ATE123105T1/en