Drilldown: Patents
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Patents > Inventors :
Dan Knierim or
George Frye or
Richard A. Jackson
& Grant date:
1990
& Cites :
Patent US 2280531A or
Patent US 2922074A or
Patent US 3011129A or
Patent US 3214516A or
Patent US 3629731A or
None
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Showing below up to 5 results in range #1 to #5.