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 CH1984/88Aexternal-prioritypatent/CH676930A5/de
Application filed by Bernardini AttiliofiledCriticalBernardini Attilio
Application grantedgrantedCritical
Publication of ATE81454T1publicationCriticalpatent/ATE81454T1/en