Assignee
Inventors
- Georg Kaeufl (3 patents)
- Erwin Kessler (13 patents)
- Erich Liepold (3 patents)
- Werner Pollersbeck (3 patents)
- Reinhold Roedel (8 patents)
- Wolfgang Schulter (16 patents)
- Klaus Spreng (4 patents)
US Patent 6545439 · Granted Apr 8, 2003