Assignee
Inventors
- Ralph B. Thompson (14 patents)
- Ned M. Rockwell (3 patents)
- Ann M. Michels (1 patents)
- William R. Mohring (2 patents)
- Kevin C. Kolbe (1 patents)
- J. Duke Seibold (1 patents)
- James M. Butterwick (1 patents)
US Patent 5616782 · Granted Apr 1, 1997