Drilldown: Patents
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Patents > Inventors :
Dan Knierim or
Phil Crosby
& Grant date:
1988
& Cites :
Patent US 3011129A or
Patent US 3214516A or
Patent US 3215948A or
Patent US 3325673A or
Patent US 3629731A or
None
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Showing below up to 3 results in range #1 to #3.