Assignee
Inventors
- Franz-Dieter Martischius (7 patents)
- Hans Peter Rath (80 patents)
- Hans-Henning Vogel (22 patents)
- Norbert Greif (20 patents)
- Knut Oppenlaender (84 patents)
- Walter Denzinger (93 patents)
- Heinrich Hartmann (149 patents)
US Patent 4959077 · Granted Sep 25, 1990