Assignee
Inventors
- Timothy S. Vraa (6 patents)
- Steven W. Tanamachi (11 patents)
- Douglas D. Jensen (11 patents)
- Leah C. Featherstone (3 patents)
- Terrance C. Joyce (1 patents)
- Robert W. Spurr (28 patents)
- Eric Julius Donaldson (21 patents)
US Patent 6710891 · Granted Mar 23, 2004