Assignee
Inventors
- Heinz Schippers (59 patents)
- Karl-Heinz Bauer (94 patents)
- Johannes Bruske (33 patents)
- Martin Fischer (111 patents)
- Benno Frank (4 patents)
- Siegfried Morhenne (8 patents)
- Ralf Dedeken (11 patents)
- Herbert Streppel (4 patents)
US Patent 5578231 · Granted Nov 26, 1996