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Priority to IT1515286UpriorityCriticalpatent/IT207306Z2/it
Publication of IT8615152V0publicationCriticalpatent/IT8615152V0/it
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Publication of IT207306Z2publicationCriticalpatent/IT207306Z2/it
IT1515286U1986-04-091986-04-09Ricuperatore di calore a serpentine da installarsi su generatori di calore in sostituzione di un tratto di camino
IT207306Z2
(it)