Drilldown: Patents

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Patents > Inventors : Dan Knierim or George Frye or Les Larson or Phil Crosby & Grant date: 1968 & Cites : Patent US 2280531A or Patent US 2922074A or Patent US 3312850A or Patent US 3413513A or Patent US 3430093A or Patent US 3531675A or Patent US 3753170A or Patent US 4048577A or None & Links : 465 or 7912AD or None

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