Assignee
Inventors
- Quentin Spencer (9 patents)
- John B. Hessling, Jr. (6 patents)
- Benjamin A. Hammond (3 patents)
- Dennis L. Kelley (2 patents)
- David W. Rieken (15 patents)
- William J. Davis (5 patents)
- Michael R. Walker (15 patents)
US Patent 8542720 · Granted Sep 24, 2013