Drilldown: Patents

Patents > Inventors : Agoston Agoston or Dan Knierim or George Frye & Company : Audio Precision or Dubner Computer Systems, Inc. or Tektronix Inc or Tektronix Inc, Sony-Tektronix Inc or XFRM Inc & Grant date: 1970 - 1979 & Cites : Patent US 2922074A or Patent US 3293474A or Patent US 3725792A or Patent US 3753170A or Patent US 4048577A or Patent US 4146844A

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