Drilldown: Patents
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Patents > Inventors :
Dan Knierim or
George Frye or
Les Larson or
Phil Crosby or
Thomas S. Buzak or
Val Garuts
& Company :
Tektronix Inc or
Tektronix Inc, Sony-Tektronix Inc or
Tony Sprando or
XFRM Inc
& Filing date:
1970 - 1979
& Cites :
Patent GB 460562A or
Patent US 2922074A or
Patent US 3331983A or
Patent US 3558930A or
Patent US 4255003A
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