Assignee
Inventors
- John F. Wood (19 patents)
- Timothy D. Kaiser (9 patents)
- Jerome B. Allyn (7 patents)
- Charles D. Dykes (8 patents)
- Frank E. Kalaskie (2 patents)
- Robert J. Carmichael (3 patents)
- Charles R. Simon (3 patents)
US Patent 4934441 · Granted Jun 19, 1990