Assignee
Inventors
- Heinz-Jurgen Bonisch (1 patents)
- Gerhard Brandl (4 patents)
- Sybille Noor (1 patents)
- Karl-Heinz Oehling (1 patents)
- Walter Riedl (2 patents)
- Mario Theissen (1 patents)
- Ernst Wodiczka (1 patents)
- Alwin Macht (18 patents)
US Patent 4691670 · Granted Sep 8, 1987