Assignee
Inventors
- James A. Kriewall (1 patents)
- Edwin F. Johnson (10 patents)
- Alan Robert Selfridge (15 patents)
- John Fairbanks (17 patents)
- Verne H. Wilson (2 patents)
- Robert William Parry (10 patents)
- James D. Cummins (2 patents)
US Patent 5691959 · Granted Nov 25, 1997