atents

Bill Johnson holds a number of patents. Among them are:


United States Patent 3,538,447 "Multiple stage direct and cross-coupled amplifier"

United States Patent 3,566,236 "Amplifier output stage coupling"

United States Patent 4,647,872 "Cascode amplifier"

United States Patent 5,266,905 "Audio amplifier with amplified feedback"


Some other patents granted for ARC:


United States Patent 4,081,627 "Electromagnetic Bipolar Loud Speaker" (!!!)

United States Patent 5,036,292 "Decoupled Electrolytic Capacitor"