Assignee
Inventors
- John D. Flaig (9 patents)
- Gene F. Baltz (26 patents)
- Henry C. Billingsley (14 patents)
- David Hartke (19 patents)
- James A. Holcomb (2 patents)
- Chester G. DuBois (26 patents)
- Dale L. Taipale (12 patents)
US Patent 4947807 · Granted Aug 14, 1990