Assignee
Inventors
- Ralph New Harris, III (24 patents)
- Clifford D. Bedford (7 patents)
- Dane Goff (70 patents)
- Duane E. Hilmas (2 patents)
- Robert A. Howd (2 patents)
- Richard Kenley (4 patents)
- Gary Koolpe (7 patents)
- Robert O. Pick (1 patents)
US Patent 4925856 · Granted May 15, 1990