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Priority to JP14504874ApriorityCriticalpatent/JPS5172385A/ja
Publication of JPS5172385ApublicationCriticalpatent/JPS5172385A/ja
Publication of JPS5728114B2publicationCriticalpatent/JPS5728114B2/ja
Dispositivo numerico per fornire segnali rappresentativi delle variazioni di frequenza rispetto ad una frequenza nominale partico larmente per un impianto sonar