Assignee
Inventors
- Michael Kreitz (8 patents)
- Christopher Holden (5 patents)
- Michael S. Gunter (10 patents)
- Brent C. Boydston (7 patents)
- Douglas A. Fullerton (7 patents)
- Billy D. Prim (5 patents)
- Robert C. Wiles (7 patents)
US Patent 7921979 · Granted Apr 12, 2011