Drilldown: Patents

Patents > Inventors : Bozidar Janko or Phil Crosby & Company : Audio Precision or Tektronix Inc & Filing date: 1980 - 1989 & Grant date: 1981 & Cites : Patent GB 460562A or Patent US 2922074A or Patent US 3426237A or Patent US 3629731A or Patent US 3725792A or Patent US 4146844A or None

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