Assignee
Inventors
- Bernard John Armitage (8 patents)
- John BOWEN (1 patents)
- Malcolm J. Crossley (1 patents)
- Ian Michael Hunneyball (3 patents)
- Bruce William Leslie (4 patents)
- Thomas Kerr Miller (2 patents)
- Michael Spowage (1 patents)
US Patent 5464781 · Granted Nov 7, 1995