Assignee
Inventors
- Richard Eric Hasz (6 patents)
- Lynn W. Abernethy (6 patents)
- David Maurice Wolla (6 patents)
- John Rudell Bussard (9 patents)
- Donald Robert Worthington (7 patents)
- Bruce Edwin Chapman (2 patents)
US Patent 5931688 · Granted Aug 3, 1999