Assignee
Inventors
- James G. Douglass, III (26 patents)
- Benjamin R. Yerxa (54 patents)
- Sammy R. Shaver (32 patents)
- Ward M. Peterson (22 patents)
- Edward G. Brown (24 patents)
- Christopher S. Crean (9 patents)
- José L. Boyer (18 patents)
US Patent 7612047 · Granted Nov 3, 2009