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Application filed by Franco & C S A S IngfiledCriticalFranco & C S A S Ing
Priority to ITTO920406ApriorityCriticalpatent/IT1257286B/it
Publication of ITTO920406A0publicationCriticalpatent/ITTO920406A0/it
Publication of ITTO920406A1publicationCriticalpatent/ITTO920406A1/it
Application grantedgrantedCritical
Publication of IT1257286BpublicationCriticalpatent/IT1257286B/it
ITTO920406A1992-05-121992-05-12Sistema per la costruzione di canali di ventilazione per gallerie coll'impiego di elementi prefabbricati.
IT1257286B
(it)