Assignee
Inventors
- Robert C. Simon, Jr. (35 patents)
- Daniel B. O'Connell (7 patents)
- David C. Poirier (14 patents)
- John A. Calkins (3 patents)
- Richard A. Marsh (35 patents)
- Peter M. Medich (5 patents)
- Richard C. Mamolen (2 patents)
US Patent 4848189 · Granted Jul 18, 1989