Drilldown: Patents
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Patents > Inventors:
Dan Knierim 
& Grant date:
1989
& Cites :
Patent US 3214631A or
Patent US 3689752A or
Patent US 3719788A or
Patent US 3753170A or
Patent US 4048577A or
Patent US 4255003A
& Grant date:
1989
& Cites :
Patent US 3214631A or
Patent US 3689752A or
Patent US 3719788A or
Patent US 3753170A or
Patent US 4048577A or
Patent US 4255003A Use the filters below to narrow your results.
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