Assignee
Inventors
- Robert W. Collins (11 patents)
- William S. Davidson (5 patents)
- Steven Michael Dickes (2 patents)
- James S. Effle (3 patents)
- Carle J. Larson (1 patents)
- Russell J. Weinschenk (1 patents)
- Peter M. Wottreng (2 patents)
US Patent 4847749 · Granted Jul 11, 1989