Assignee
Inventors
- Thomas E. Gouldy (3 patents)
- William C. Knoll (14 patents)
- Ernest R. Ritter, deceased (1 patents)
- Thomas M. Lynch (15 patents)
- Ronald E. Steffey (3 patents)
- Donald R. White (8 patents)
- Robert E. Brown (23 patents)
US Patent 4802859 · Granted Feb 7, 1989