Assignee
Inventors
- Matthew Paul Coghlan (1 patents)
- Ashley Edward Fenwick (9 patents)
- David Haigh (16 patents)
- Julie Holder (1 patents)
- Robert J. Ife (58 patents)
- Alastair Reith (2 patents)
- Unknown
- Robert W. Ward (20 patents)
US Patent 6719520 · Granted Apr 13, 2004