Drilldown: Patents
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Patents > Inventors :
Dan Knierim or
Linley Gumm
& Grant date:
1988
& Cites :
Patent US 2280531A or
Patent US 2883619A or
Patent US 3214631A or
Patent US 3689752A or
Patent US 4048577A or
None
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Showing below up to 2 results in range #1 to #2.