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 Wtz Feikeramischen IndfiledCriticalWtz Feikeramischen Ind
Priority to IT49725/80ApriorityCriticalpatent/IT1217261B/it
Publication of IT8049725A0publicationCriticalpatent/IT8049725A0/it
Application grantedgrantedCritical
Publication of IT1217261BpublicationCriticalpatent/IT1217261B/it