Drilldown: Patents
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Patents > Inventors :
Bruce Hofer or
Dan Knierim or
George Frye or
John Kobbe
& Grant date:
1960 - 1969
& Cites :
Patent US 3214516A or
Patent US 3215948A or
Patent US 3689752A or
Patent US 4048577A or
None
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Showing below up to 12 results in range #1 to #12.