Drilldown: Patents
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Patents > Inventors :
Bruce J. Penney or
Dan Knierim
& Grant date:
1989
& Cites :
Patent US 3215948A or
Patent US 3369173A or
Patent US 3510690A or
Patent US 3689752A or
Patent US 3753170A or
Patent US 4048577A or
None
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Showing below up to 4 results in range #1 to #4.