Assignee
Inventors
- Unknown
- David Arthur Fell (42 patents)
- Thomas Joel Halloran (2 patents)
- Paul Martin Niemi (9 patents)
- Martin Karl Olsen (2 patents)
- Kenneth Raymond Schueler, Jr. (8 patents)
- Darold Dean Tippey (24 patents)
US Patent 6267575 · Granted Jul 31, 2001