Assignee
Inventors
- John E. D. Barton (19 patents)
- David Cartwright (37 patents)
- John M. Cox (11 patents)
- Glynn Mitchell (33 patents)
- Charles G. Carter (51 patents)
- Davie L. Lee (1 patents)
- Francis H. Walker (30 patents)
- Frank X. Woolard (26 patents)
US Patent 5098464 · Granted Mar 24, 1992