Assignee
Inventors
- William C. Allen (27 patents)
- Stephen Pye (11 patents)
- Gerald M. Hamblin (3 patents)
- Jose M. Perez (25 patents)
- William E. Amend (11 patents)
- John D. Bush (4 patents)
- David Holligan (3 patents)
- Delbert E. Pyle (3 patents)
US Patent 5236231 · Granted Aug 17, 1993