Assignee
Inventors
- Richard H. Still (5 patents)
- Stanley R. K. Dawber (3 patents)
- Raymond Peters (3 patents)
- Tahir H. Shah (2 patents)
- Nigel W. Hayman (6 patents)
- John R. Wright (3 patents)
- Roger I. Hancock (6 patents)
- Kenneth M. Jones (4 patents)
US Patent 4970275 · Granted Nov 13, 1990