Assignee
Inventors
- Marlo G. Van Klompenburg (14 patents)
- David J. Vande Steeg (6 patents)
- Robert S. Evers (7 patents)
- Andrew W. Middleswart (6 patents)
- Bruce A. Baier (14 patents)
- Gregory J. Vetter (62 patents)
US Patent 6640389 · Granted Nov 4, 2003