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 CH6621/83Aexternal-prioritypatent/CH657019A5/en
Application filed by Schouwenburg Gerrit AfiledCriticalSchouwenburg Gerrit A
Application grantedgrantedCritical
Publication of ATE29952T1publicationCriticalpatent/ATE29952T1/en