Assignee
Inventors
- Hans-Martin Hutmacher (10 patents)
- Franz Merger (148 patents)
- Franz J. Broecker (20 patents)
- Rolf Fischer (244 patents)
- Uwe Vagt (17 patents)
- Wolfgang Harder (71 patents)
- Claus-Ulrich Priester (22 patents)
US Patent 4731445 · Granted Mar 15, 1988