Assignee
Inventors
- Richard Grevis (3 patents)
- Lorain K. Holley (1 patents)
- Philip J. Maker (4 patents)
- Geoffrey A. Drane (3 patents)
- Andrew Parle (1 patents)
- Andrew Sands (1 patents)
- Rodney Gordon Parkin (6 patents)
- Paul Dyson (4 patents)
US Patent 5063928 · Granted Nov 12, 1991