Assignee
Inventors
- Ian H. Coates (40 patents)
- John Bradshaw (40 patents)
- James A. Bell (16 patents)
- David C. Humber (24 patents)
- George B. Ewan (24 patents)
- William Mitchell (26 patents)
- Barry J. Price (24 patents)
US Patent 4859662 · Granted Aug 22, 1989