Drilldown: Patents
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Patents > Inventors :
Dan Knierim or
George Frye or
Les Larson or
Phil Crosby
& Filing date:
1990 - 1999
& Grant date:
1993
& Cites :
Patent US 3312850A or
Patent US 4048577A or
None
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Showing below up to 2 results in range #1 to #2.