Drilldown: Patents
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Patents > Inventors :
Dan Knierim or
George Frye or
John Addis or
John Kobbe
& Company:
Tektronix Inc
& Filing date:
2000 - 2009
& Grant date:
February 2013
& Cites :
Patent US 2883619A or
Patent US 3011129A or
Patent US 3426236A or
Patent US 4146844A or
Patent US 4255003A
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