Drilldown: Patents
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Patents > Inventors :
Dan Knierim or
George Frye or
Les Larson or
Phil Crosby
& Filing date:
1980 - 1989
& Cites :
... or
Patent US 3358159A or
Patent US 3413513A or
Patent US 3629731A or
Patent US 4255003A or
None
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Showing below up to 18 results in range #1 to #18.