Assignee
Inventors
- Richard Cwiakala (7 patents)
- Eugene P. Hefferon (27 patents)
- Kenneth J. Oakes (72 patents)
- Allen H. Preston (12 patents)
- David E. Stucki (10 patents)
- Leslie W. Wyman (57 patents)
- Harry M. Yudenfriend (247 patents)
US Patent 5170472 · Granted Dec 8, 1992