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Application filed by Coppo S N C FllifiledCriticalCoppo S N C Flli
Priority to IT8920982ApriorityCriticalpatent/IT1230920B/en
Publication of IT8920982A0publicationCriticalpatent/IT8920982A0/en
Application grantedgrantedCritical
Publication of IT1230920BpublicationCriticalpatent/IT1230920B/en
Passage for pipes and the like, such as cables, pipes and the like, through an opening and device for making a tapered seat for such a passage in a concrete wall.