Assignee
Inventors
- Helmut Biere (20 patents)
- Mogens Engelstoft (29 patents)
- Andreas Huth (65 patents)
- Dieter Rahtz (23 patents)
- Ralph Schmiechen (34 patents)
- Dieter Seidelmann (43 patents)
- David N. Stephens (19 patents)
US Patent 4855295 · Granted Aug 8, 1989