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Application filed by Angiolelli AntoniofiledCriticalAngiolelli Antonio
Priority to ITFI1982U11786UpriorityCriticalpatent/IT8211786U1/it
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Publication of IT8211786U1publicationCriticalpatent/IT8211786U1/it
Procedimento per la costruzione di una testa perforatrice provvista di elementi duri resistenti all'usura,e di una testa perforatrice costruita secondo detto procedimento