Assignee
Inventors
- Andreas Huth (65 patents)
- Ralph Schmiechen (34 patents)
- David N. Stephens (19 patents)
- Mogens Engelstoft (29 patents)
- Frank Waetjen (4 patents)
- John Bondo Hansen (40 patents)
- Leif H. Jensen (23 patents)
US Patent 4778800 · Granted Oct 18, 1988