IP Library › Granted Patent US 6,568,492
Granted Patent Utility
US 6,568,492 · App. 09/798,171

Drag-type casing mill/drill bit

Inventors: Gary M. Thigpen, Carl W. Keith
Patented Case View Patent ↗
Granted: May 27, 2003 Filed: Mar 2, 2001
Inventors
Gary M. Thigpen
Carl W. Keith
Assignee (at issue)
Varel International

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Quick Facts
Patent No.
US 6,568,492
App. No.
09/798,171
Filed
2001-03-02
Granted
2003-05-27
Kind
B2