Drilldown: Patents

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Patents > Company : Audio Precision or Tektronix Inc or Tektronix Inc, Sony-Tektronix Inc & Filing date: 1985 & Grant date: May 1989 & Cites : Patent GB 460562A or Patent US 2922074A or Patent US 3214631A or Patent US 3293474A or Patent US 3430093A or Patent US 3531675A or Patent US 3740539A or Patent US 4150420A or None & Links : 5A38 or 5A45 or 7D15 or None

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Inventors:
Bruce J. Penney (1) · Heinz Erwin Grellmann (1) · Leonard A. Roland (1)
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Filing date:
April 12, 1985 (1) · April 29, 1985 (1)
Grant date:
May 9, 1989 (1) · May 16, 1989 (1)
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