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 Schreyer Walter Derendingen SvfiledCriticalSchreyer Walter Derendingen Sv
Priority to IT7828977ApriorityCriticalpatent/IT1100979B/it
Publication of IT7828977A0publicationCriticalpatent/IT7828977A0/it
Application grantedgrantedCritical
Publication of IT1100979BpublicationCriticalpatent/IT1100979B/it