Assignee
Inventors
- Ernest G. Schutt (71 patents)
- Richard S. Dondero (1 patents)
- William P. Hansen (4 patents)
- George Hovorka (25 patents)
- Raymond E. Meyer (1 patents)
- Karin L. Utberg (2 patents)
- David Greenwood (25 patents)
US Patent 5017009 · Granted May 21, 1991