Drilldown: Patents

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Patents > Inventors : Art Metz or Bruce Hofer or Bruce J. Penney or Dan Knierim or Gene Andrews or George Frye or John Kobbe or Richard A. Jackson & Company : Audio Precision or Tony Sprando & Grant date: 1990 - 1999 & Cites : Patent US 2922074A or Patent US 3312850A or Patent US 3725792A or Patent US 3796910A or Patent US 4146844A or Patent US 4255003A or None

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