Assignee
Inventors
- Daniel R. Crum (30 patents)
- Peter A. Kotlarek (17 patents)
- George W. Brandt (3 patents)
- Gene Fields (33 patents)
- Joe T. Hill (64 patents)
- John R. Williams (76 patents)
- Robert E. Utter (29 patents)
US Patent 5129798 · Granted Jul 14, 1992