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 CH371087Aexternal-prioritypatent/CH673389A5/en
Priority claimed from CH173588Aexternal-prioritypatent/CH675958A5/en
Application filed by Schultz IngofiledCriticalSchultz Ingo
Priority claimed from EP19880810647external-prioritypatent/EP0309412B1/en
Application grantedgrantedCritical
Publication of ATE88884T1publicationCriticalpatent/ATE88884T1/en