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Priority to IT02199690ApriorityCriticalpatent/IT1243904B/it
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Publication of IT9021996A1publicationCriticalpatent/IT9021996A1/it
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Publication of IT1243904BpublicationCriticalpatent/IT1243904B/it
Sostegno di armamento ferroviario, con elementi prefabbricati in calcestruzzo armato, e piattaforma prefabbricata in calcestruzzo armato per la sua esecuzione