Assignee
Inventors
- Tommy D. Kelley (3 patents)
- Ralph Kirby (7 patents)
- Kevin D. Rogers (3 patents)
- Mark D. Braine (7 patents)
- Donald W. Schultz (7 patents)
- Richard G. Tuttle (6 patents)
- William C. Roberts (15 patents)
US Patent 5272846 · Granted Dec 28, 1993