Assignee
Inventors
- Duane Herbert Ziegler (10 patents)
- Charles P. Barbaro (1 patents)
- D. Keith Dewey (1 patents)
- Steven L. Wildemuth (1 patents)
- Frederick W. Nelson (38 patents)
- Kenneth D. Friend (4 patents)
- Terence D. Pickett (54 patents)
US Patent 4967544 · Granted Nov 6, 1990