Assignee
Inventors
- Steven R. Specker (1 patents)
- Craig D. Sawyer (9 patents)
- Russell L. Crowther (11 patents)
- Bennett J. Gitnick (1 patents)
- Kenneth V. Walters (3 patents)
- Robert E. Brown (23 patents)
- Larry E. Fennern (22 patents)
US Patent 4285769 · Granted Aug 25, 1981