Assignee
Inventors
- Charles A. Gray (21 patents)
- James F. Patterson (24 patents)
- Chance Scales (6 patents)
- Phillip Kaltenbacher (10 patents)
- Royce L. Rennaker (7 patents)
- Duane D. Fortune (34 patents)
- Stuart S. Sullivan (21 patents)
US Patent 6578871 · Granted Jun 17, 2003