Drilldown: Patents
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Patents > Inventors :
Bruce J. Penney or
Dan Knierim or
John Kobbe
& Filing date:
May 28, 1999
& Grant date:
2001
& Cites :
Patent US 2883619A or
Patent US 2922074A or
Patent US 3689752A or
Patent US 3796910A or
Patent US 4048577A
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