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 Spiratecnica SrlfiledCriticalSpiratecnica Srl
Priority to IT22635/85ApriorityCriticalpatent/IT1186335B/it
Publication of IT8522635A0publicationCriticalpatent/IT8522635A0/it
Application grantedgrantedCritical
Publication of IT1186335BpublicationCriticalpatent/IT1186335B/it