Assignee
Inventors
- Joseph E. Dunn (20 patents)
- R. Wayne Clark (7 patents)
- John F. Asmus (13 patents)
- Jay S. Pearlman (13 patents)
- Keith Boyer (14 patents)
- Fraincois Painchaud (2 patents)
- Gunter A. Hofmann (76 patents)
US Patent 4871559 · Granted Oct 3, 1989