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Priority to IT5306288UpriorityCriticalpatent/IT214336Z2/it
Publication of IT8853062V0publicationCriticalpatent/IT8853062V0/it
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Publication of IT214336Z2publicationCriticalpatent/IT214336Z2/it
Sostegno di armamento ferroviario, con elementi prefabbricati in calcestruzzo armato, e piattaforma prefabbricata in calcestruzzo armato per la sua esecuzione