Epr4, i.e. extended partial response class 4, polynomial *2

Official title: {EPR4, i.e. extended partial response class 4, polynomial (1-D) *(1+D)2}

G11B20/10074 (Epr4, i.e. extended partial response class 4, polynomial *2) appears on 54 US grants and 28 published applications in this corpus.