Assignee
Inventors
- James M. Young (18 patents)
- Craig Prater (66 patents)
- David Grigg (19 patents)
- Charles Meyer (8 patents)
- William H. Hertzog (2 patents)
- John A. Gurley (27 patents)
- Virgil B. Elings (54 patents)
US Patent 5705814 · Granted Jan 6, 1998