Assignee
Inventors
- Robert J. Gehrke (1 patents)
- Marie H. Putnam (1 patents)
- E. Wayne Killian (3 patents)
- Richard G. Helmer (1 patents)
- Ronnie L. Kynaston (3 patents)
- Scott G. Goodwin (2 patents)
- Larry O. Johnson (6 patents)
US Patent 5206174 · Granted Apr 27, 1993