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<http://webisa.webdatacommons.org/444683823>	<http://www.w3.org/ns/prov#value>	" John Kracik, David FordOriginal AssigneeKeith A. Womer, W.Dave Harbour, John Kracik, David FordExport CitationBiBTeX, EndNote, RefManReferenced by (10), Classifications (6), Legal Events (4) External Links: USPTO, USPTO Assignment, EspacenetOperator workstation for use on a drilling rig including integrated control and information" .
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