Drilldown: Patents

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Patents > Inventors : Dan Knierim or George Frye or John Addis or John Kobbe or Les Larson & Grant date: 1990 - 1999 & Cites : ... or Patent US 3293473A or Patent US 3312850A or Patent US 3331983A or Patent US 3413513A or Patent US 3558930A or Patent US 3740539A or None

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