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Application filed by Albert L Babb, Robert C BrumfieldfiledCriticalAlbert L Babb
Priority to IT8148480ApriorityCriticalpatent/IT1170977B/it
Publication of IT8148480A0publicationCriticalpatent/IT8148480A0/it
Application grantedgrantedCritical
Publication of IT1170977BpublicationCriticalpatent/IT1170977B/it