Assignee
Inventors
- Brian Anderson (8 patents)
- Barbara C. Sangster (2 patents)
- Richard Kasson (1 patents)
- Shirley A. Zierke (1 patents)
- Gerald V. Peterson (2 patents)
- Charles E. Shapiro (1 patents)
- J. Scott Daup (1 patents)
US Patent 5157783 · Granted Oct 20, 1992