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 filedfiledCritical
Priority to IT97MI001499ApriorityCriticalpatent/IT1292419B1/it
Publication of ITMI971499A0publicationCriticalpatent/ITMI971499A0/it
Publication of ITMI971499A1publicationCriticalpatent/ITMI971499A1/it
Application grantedgrantedCritical
Publication of IT1292419B1publicationCriticalpatent/IT1292419B1/it
IT97MI001499A1997-06-251997-06-25Dispositivo costruttivo per la realizzazione di galllerie naturali con copertura assente o insufficiente
IT1292419B1
(it)