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 IT84947/79Aexternal-prioritypatent/IT1127174B/it
Priority claimed from IT84941/80Aexternal-prioritypatent/IT1154221B/it
Application filed by Placido ZampierifiledCriticalPlacido Zampieri
Priority claimed from EP80104045Aexternal-prioritypatent/EP0023001B1/de
Application grantedgrantedCritical
Publication of ATE10394T1publicationCriticalpatent/ATE10394T1/de