Assignee
Inventors
- Michael A. Denio (15 patents)
- William S. Egr (2 patents)
- Douglas C. Crawford (7 patents)
- Michael D. Asal (38 patents)
- Graham B. Short (8 patents)
- James G. Littleton (12 patents)
- Jerry R. Van Aken (20 patents)
US Patent 5269021 · Granted Dec 7, 1993