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 Inst Prueffeld Fuer Elek SchefiledCriticalInst Prueffeld Fuer Elek Sche
Priority to BE600594ApriorityCriticalpatent/BE600594A/fr
Publication of BE600594ApublicationCriticalpatent/BE600594A/fr