Assignee
Inventors
- H. Erwin Grellmann (11 patents)
- John B. Gilbert (25 patents)
- Robert C. Tidrick (13 patents)
- Randy C. Karambelas (17 patents)
- William Bruce Weaver (12 patents)
- James B. Jensen (13 patents)
- Dale R. Peterson (46 patents)
US Patent 5917528 · Granted Jun 29, 1999