Assignee
Inventors
- John W. Clitherow (38 patents)
- Barry J. Price (24 patents)
- John Bradshaw (40 patents)
- Michael Martin-Smith (13 patents)
- John MacKinnon (18 patents)
- Duncan B. Judd (26 patents)
- Roger Hayes (15 patents)
US Patent 4536508 · Granted Aug 20, 1985