Drilldown: Patents
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Patents > Inventors :
Dan Knierim or
George Frye or
John Addis
& Grant date:
1970 - 1979
& Cites :
... or
Patent GB 460562A or
Patent US 2922074A or
Patent US 3293474A or
Patent US 3339088A or
None
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Showing below up to 11 results in range #1 to #11.