Drilldown: Patents
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Patents > Inventors :
Dan Knierim or
George Frye
& Grant date:
2001
& Cites :
Patent US 2280531A or
Patent US 2922074A or
Patent US 3426237A or
Patent US 3558930A or
Other or
None
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Showing below up to 1 result in range #1 to #1.