Assignee
Inventors
- David A. Elko (82 patents)
- Audrey A. Helffrich (15 patents)
- John F. Isenberg, Jr. (10 patents)
- Brian B. Moore (18 patents)
- Jeffrey M. Nick (96 patents)
- Michael D. Swanson (50 patents)
- Joseph Williams (11 patents)
US Patent 5561809 · Granted Oct 1, 1996