Assignee
Inventors
- Frank Burkamp (20 patents)
- Graham David Checksfield (1 patents)
- Stephen Robert Fletcher (35 patents)
- Stephen Lewis (7 patents)
- Edward Giles Mciver (9 patents)
- Paul Oakley (14 patents)
- Martin Teall (41 patents)
US Patent 8203004 · Granted Jun 19, 2012